U.S. patent application number 16/895990 was filed with the patent office on 2020-09-24 for compositions containing natural extracts and use thereof for skin and hair.
The applicant listed for this patent is Seiberg Consulting, LLC. Invention is credited to Miri Seiberg.
Application Number | 20200297608 16/895990 |
Document ID | / |
Family ID | 1000004874135 |
Filed Date | 2020-09-24 |
United States Patent
Application |
20200297608 |
Kind Code |
A1 |
Seiberg; Miri |
September 24, 2020 |
COMPOSITIONS CONTAINING NATURAL EXTRACTS AND USE THEREOF FOR SKIN
AND HAIR
Abstract
The present disclosure relates to compositions containing a
natural extract(s) and their fraction(s) and the use of such
compositions for treatment of skin, hair and nail. For example, the
present disclosure relates to compositions containing an aqueous
extract of (i) Yacon leave, (ii) Amor Seco leave, or (iii)
Porphyridium biomass, or a combination thereof and a
pharmaceutically or cosmetically acceptable carrier use on hair
skin and nails for cosmetic purposes.
Inventors: |
Seiberg; Miri; (Princeton,
NJ) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Seiberg Consulting, LLC |
Princeton |
NJ |
US |
|
|
Family ID: |
1000004874135 |
Appl. No.: |
16/895990 |
Filed: |
June 8, 2020 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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15342947 |
Nov 3, 2016 |
10675233 |
|
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16895990 |
|
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62256803 |
Nov 18, 2015 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61Q 19/04 20130101;
A61K 8/9789 20170801; A61K 2800/5922 20130101; A61K 36/28 20130101;
A61K 2800/522 20130101; A61K 8/34 20130101; A61K 8/345 20130101;
A61K 2800/594 20130101; A61K 2800/782 20130101; A61K 8/891
20130101; A61Q 19/02 20130101; A61K 8/676 20130101; A61K 8/60
20130101; A61K 8/9717 20170801; A61K 8/347 20130101; A61K 8/447
20130101; A61K 8/41 20130101; A61K 8/46 20130101; A61K 36/04
20130101; A61K 2800/524 20130101; A61K 2800/48 20130101; A61Q 5/00
20130101; A61K 8/732 20130101; A61K 8/922 20130101; A61K 8/062
20130101; A61K 8/88 20130101; A61K 8/8147 20130101; A61Q 5/10
20130101; A61K 36/48 20130101; A61K 2800/51 20130101 |
International
Class: |
A61K 8/44 20060101
A61K008/44; A61Q 5/10 20060101 A61Q005/10; A61Q 19/04 20060101
A61Q019/04; A61K 36/04 20060101 A61K036/04; A61K 36/28 20060101
A61K036/28; A61K 36/48 20060101 A61K036/48; A61K 8/9717 20060101
A61K008/9717; A61K 8/9789 20060101 A61K008/9789; A61Q 19/02
20060101 A61Q019/02; A61K 8/06 20060101 A61K008/06; A61K 8/34
20060101 A61K008/34; A61K 8/41 20060101 A61K008/41; A61K 8/46
20060101 A61K008/46; A61K 8/60 20060101 A61K008/60; A61K 8/67
20060101 A61K008/67; A61K 8/73 20060101 A61K008/73; A61K 8/81
20060101 A61K008/81; A61K 8/88 20060101 A61K008/88; A61K 8/891
20060101 A61K008/891; A61K 8/92 20060101 A61K008/92; A61Q 5/00
20060101 A61Q005/00 |
Claims
1. A method for reducing hair graying, comprising applying to scalp
or non-glabrous skin a composition comprising an aqueous extract of
(i) Yacon leave, (ii) Amor Seco leave, or (iii) Porphyridium
biomass, or a combination thereof and a pharmaceutically or
cosmetically acceptable carrier.
Description
RELATED APPLICATIONS
[0001] This application claims priority to U.S. application Ser.
No. 15/342,947, filed Nov. 3, 2016, which claims priority to U.S.
application Ser. No. 62/256,803, filed Nov. 18, 2015, the entire
contents of which is hereby incorporated by reference.
BACKGROUND
[0002] Hair graying (canities), or the loss of pigment production
and deposition within the hair shafts, is an obvious sign of aging,
which is highly undesirable in many cultures. Hair graying is a
complex phenomenon resulting from the interaction of several
intrinsic and extrinsic factors. Intrinsic factors may include
genetically programmed processes that could lead to premature
graying, genetic diseases, and intrinsic aging processes. Extrinsic
factors may include environmental factors (e.g. wind, heat,
cigarette smoke, chemicals, UV irradiation, etc.), nutritional
effects, medications effects, and emotional stress. All these
elements induce molecular and cellular processes that contribute to
the loss of hair pigmentation.
[0003] The major approach to address hair graying is hair dyeing
("coloring"), which was documented archeologically from about 1500
BC, and is still popular today. However, hair coloring has several
limitations. The borderline of the hair coloring area becomes
visible as hairs grow, creating a less aesthetic appearance than
desired, and disclosing the undesired aging process. Hair dyeing
requires the use of chemicals that are unhealthy or destructive to
the hair or the surrounding skin, as well as to the environment,
such as hydrogen peroxide. Professional hair dyeing is associated
with significant costs and schedule obligations, and home
procedures entail a major time commitment, staining and disorder.
It is desired, therefore, to have better procedures and methods to
solve the hair graying problem.
[0004] It is desired to have a topical treatment that could
prevent, slow, reduce or reverse hair graying. It is more desired
to have such a treatment as a single and affordable topical
treatment for daily skin and hair care. Such a treatment should
provide solutions to hair graying with little or no irritation and
few or no negative side effects and should further provide other
desired scalp and hair health, wellness and beautifying benefits.
It is further desired to have a topical treatment that does not
require a pharmaceutical prescription.
[0005] Skin aging is a slow, chronic process, in which the
functionality of skin molecules and structures is reduced with time
and is further compromised with UV exposure. Skin aging is first
noticed with the appearance of facial sagging, fine lines, wrinkles
and age spots, followed by the appearance of dull and thinning
hair, sparse eyebrows and eyelashes, and dry and fragile skin and
nails. The anti-aging market provides remedies and solutions
directed mainly to enhance facial beauty. It is desired to have
"anti-aging" products that affect the molecular and cellular
processes contributing to the aging process, and provide additional
functional benefits, not just cosmetic effects.
[0006] The mid-50s "free radical theory of aging" correlates
cumulative oxidative damage with the degree of aging. Oxidative
stress, (or the imbalance between reactive oxygen species (ROS)
creation and the ability to detoxify ROS and repair the resulting
damage) is increased with age and with UV exposure, while the
antioxidant response of the aging cells slows with the accumulation
of mutations. ROS induce inflammatory processes and
immune-suppression, which further contribute to barrier damage and
compromise skin integrity. Clinical data suggest that reducing
oxidative stress contributes to skin health and wellness and
reduces aging manifestations. It is desired to have an "anti-aging"
skin care solution that not only reduces oxidative stress, but also
enhances the endogenous antioxidant response of the aging
cells.
[0007] One of the more noticeable and unwanted signs of aging is
skin pigmentary lesions. The brown spots that appear on UV-exposed
skin areas ("age spots") are one such pigmentary problem.
Additionally, age-induced white, hypo-pigmented spots (idiopathic
guttate hypomelanosis, IGH) also appear on sun-exposed, aged skin
areas, and signal the undesired "old" look. These affected areas
may stop making melanin at all, causing them to completely lose
pigment, resulting in unsightly, but benign lesions. IGH lesions
are commonly found in more than 50% of older and elderly
individuals (aged .gtoreq.40 years), and about 30% of the
individuals develop their initial IGH lesions prior to 20 years of
age.
[0008] There is no treatment available for the spotted loss of skin
pigmentation such as in IGH. It is desired to have a topical
treatment that could preserve the natural skin color, or prevent,
or slow, or reduce or reverse spotty skin pigment loss in the
pigment-losing areas of the skin such as in IGH. It is more desired
to have such a treatment as a single and affordable topical
treatment for daily skin care. Such a treatment should provide
solutions to spotty skin pigment loss with minimal or no irritation
and few or no negative side effects, and should further provide
other desired skin health, wellness and beautifying benefits.
[0009] IGH should not be confused with vitiligo, which is a skin
depigmenting disease. Vitiligo is a disorder in which white,
non-pigmented patches of skin appear on different parts of the
body. The vitiligo lesions are large patches, they expand rapidly,
and they are not related to sun exposure or aging. Vitiligo may
arise from autoimmune, genetic, neural, or viral causes, as well as
from oxidative stress. In some cases, vitiligo spreads slowly, over
many years, however, in other cases the spreading occurs very
quickly. Some reports associate the increase in white patches with
physical or emotional stress. The most commonly prescribed
treatment for vitiligo is a potent or super-potent topical
corticosteroid. Unfortunately, only about 45 percent of patients
regain some skin color following months of this treatment. Light
therapy is very ineffective, and PUVA therapy does not provide
satisfactory results as well.
[0010] It is desired to have a topical treatment that could
preserve the natural skin color, or prevent, or slow, or reduce or
reverse pigment loss in vitiligo. It is more desired to have such a
treatment as a single and affordable topical treatment for daily
skin care. Such a treatment should provide solutions to vitiligo
with little or no irritation and few or no negative side effects,
and should further provide other desired skin health, wellness and
beautifying benefits.
[0011] Geriatric skin (generally referred to the skin of
individuals 65 years old or older, but the age can vary due to
numerous factors) is significantly aged and therefore very fragile.
It is thin and dry, very itchy, easily bruised and predisposed to
wounding, tearing and infections, therefore affecting both health
and quality of life. In the elderly skin, the aging processes
continue and magnify. The amount of inflammatory infiltrate is
increased, wound healing and immune responses are delayed,
thermoregulation is compromised and sweat and sebum production are
decreased. The cumulative effects of life-long environmental
exposure further enhance functional skin aging in the elderly.
These include not only UV exposure, pollution and smoke, but also
factors like air conditioning, heating and hot water use. Diseases,
and in particular diabetes, immune disorders, cardiac diseases,
renal or hepatic failure, malignancies and infections enhance the
skin aging process as does the prolonged use of medications like
steroids, anticoagulants, blood thinners, immune-modulators and
cancer therapies. Slowness and life style changes further
contribute to dehydration and reduced skin nutrition, enhancing the
dryness and fragility of the elderly skin, and contributing to an
increase in "little injuries" and their consequences.
Interestingly, it was suggested that most of the elderly skin
changes associated with aging are due to intrinsic aging rather
than photodamage or lifestyle.
[0012] The major needs of geriatric skin are not related to facial
beauty, but to the health and well-being of body skin. What is
needed is to reduce dryness and itchiness, to reduce the amount and
the severity of skin injuries, to reduce skin tears, reduce
hematomas, enhance the healing time of minor injuries, reduce the
rate of infections, and the like. Unfortunately, there are few, if
any, consumer products dedicated to these geriatric skin needs.
Geriatric skin could benefit from enhancing its biological
properties and reducing undesired attributes such as pruritis or
fragility in a way superior to the use of moisturization alone. It
is desired to have a topical treatment that could prevent, slow,
reduce or reverse skin aging processes in geriatric skin. It is
more desired to have such a treatment as a single and affordable
topical treatment for daily care. Such a treatment should provide
solutions to geriatric skin needs, with little or no irritation and
few or no negative side effects to the fragile skin, and should
further provide other desired health, wellness and cosmetic
benefits. It is further desired to have such a single topical
treatment that does not require a pharmaceutical prescription.
[0013] Elderly patients experience common nail changes and
dystrophies that induce pain, affect daily activities, and are of
cosmetic concern. With age, nails may become brittle and prone to
breaking, may become clubbed (a significant shape-change with very
rounded nails), or may be discolored. Unfortunately, there are no
consumer products dedicated to elderly nail care, or to the general
health and wellbeing of the nails. It is desired to have products
to enhance the biological properties of the nails and their
surrounding skin and cuticle, and to reduce undesired properties
associated with nail aging. It is more desired to have such a
product as a single and affordable topical treatment for daily
care. Such a treatment should provide solutions to geriatric skin
needs, with little or no irritation and few or no negative side
effects to the fragile skin, and should further provide other
desired health, wellness and cosmetic benefits. It is further
desired to have such a single topical treatment that does not
require a pharmaceutical prescription.
SUMMARY
[0014] The present disclosure features compositions for the topical
delivery of a natural extract(s) product (e.g., to a mammal in need
thereof, such as a human) comprising a natural product(s) such as,
but not limiting to, a botanical extract, an algae extract, a yeast
extract, a fungi extract or a microorganism extract, or a
fraction(s) of such extract, or a combination(s) thereof
(collectively defined as "natural extract"). In one instance, the
natural extracts of this disclosure (1) contain active,
non-denatured catalase and/or glutathione peroxidase, or (2) have a
catalase-like activity (e.g. degrading or eliminating hydrogen
peroxide), or (3) have a catalase-enhancing activity (e.g.
enhancing gene expression, protein translation or other activity
that leads to an increase in hydrogen peroxide degradation or
elimination), or (4) have a catalase stabilizing activity, or a
combination of one or more such activities (collectively defined as
"catalase-related activity" or "catalase-like activity"). In
another embodiment, the natural source of this disclosure (e.g.
botanical, plant, algae, yeast, fungi or microorganism) could be
grown with, or enriched with, or supplemented with, or engineered
for producing, or combined with the L-methionine, or the natural
extracts themselves could be combined with L-methionine.
[0015] In one embodiment the present disclosure describes a natural
extract and a pharmaceutical or a cosmetic carrier. In yet another
illustration, the compositions of this disclosure further comprise
of delivery system(s), or vehicle(s), or stabilizing system(s) that
enable to maintain an active catalase-related activity, and deliver
such an activity into the skin, the nail or the hair follicles.
[0016] The compositions described in this disclosure could be used
for skin, hair and nail care, to provide skin, scalp, hair and nail
with health and wellness benefits, and to provide skin, scalp, hair
and nail with anti-aging and with geriatric skin benefits. In yet
another feature, the compositions described in this disclosure
could be used to reduce the visibility of the signs of skin, scalp,
hair and nail aging and the signs of geriatric skin.
[0017] The present disclosure also features a method of reducing
the hair graying process of a mammal, said method comprising the
step of applying a composition described herein to the scalp or to
other desired skin areas with hair or to non-glabrous skin. Gray
hair is defined as the hair that has changed its color from the
original natural hair color due to biological processes such as
aging, chemical exposure, environmental exposure, nutritional
exposure, medicine exposure and the like, and is of reduced color,
or achromatic color, or an intermediate between white and black
that is lighter than the original natural hair color. Human
non-glabrous skin is defined as all human skin areas that are
hairy, or that can grow hair or that can contain hair follicles.
Non-glabrous skin refers to all external skin that is not naturally
hairless, and excludes only the skin found on the ventral portion
of the fingers, palms, soles of feet, lips, labia minora, and glans
penis. Reducing hair graying includes, but is not limited to the
preservation of the natural color of the hair, or to reducing the
quantity or quality of loss of the natural hair color or to the
slowing, reducing, or reversing the process of hair graying, or to
preventing hair graying, or to reducing the visibility of hair
graying.
[0018] The compositions described in this disclosure could also be
used to preserve the natural color of the skin, or to slow, or to
reduce, or to delay, or to reverse the loss of pigment on the skin
or the uneven decay in the natural color of the skin, or to reduce
the visibility of hypo-pigmentary skin lesions (including, but not
limiting to, pigment-loss lesions, "white spots", IGH and vitiligo
lesions). Such lesions include, but are not limited to, age-induced
white, or lighter than the natural skin color, or hypo-pigmented
spots (e.g. idiopathic guttate hypomelanosis, IGH), and
disease-induced pigmentary loss (e.g. vitiligo). The present
disclosure also describes a method of reducing the appearance of
non-pigmented skin areas of a mammal, said method comprising the
step of applying the above compositions to the desired skin
areas.
[0019] In one aspect, the present disclosure relates to methods of
preserving the natural color of the hair, or slowing the decay in
the natural pigment production of the hair follicle, or delaying,
or slowing, or reducing the severity of hair graying, or reducing
the appearance of hair graying, by applying a composition
containing a safe and effective amount of a natural extract. In
another aspect, the natural extract could be supplemented with,
enriched with or combined with L-methionine.
[0020] In another aspect, the present disclosure relates to methods
of preventing the decay in the natural pigment production of the
hair follicle and reducing the appearance of hair graying, by
applying a composition containing a safe and effective amount of a
natural extract. In one aspect the natural extract could be
supplemented with, enriched with or combined with L-methionine.
[0021] Yet in another aspect, the present disclosure relates to
methods of partially or completely reversing the decay in the
natural pigment production of the hair follicle and reducing the
appearance of hair graying, by applying a composition containing a
safe and effective amount of a natural extract. In one aspect the
natural extract could be supplemented with, enriched with or
combined with L-methionine.
[0022] In another aspect, the present disclosure features a product
including a composition comprising a natural extract and
instructions directing the user to apply the composition to the
hair, scalp, or other skin areas with hair (non-glabrous skin), in
order to preserve the natural hair color, or slow, or prevent or
reverse the decay in the natural pigment production of the hair
follicle, or slow, or prevent or reverse the appearance of hair
graying. Such hairy skin areas include, but are not limited to the
scalp, head, eyebrows, eyelashes, beard, mustache, chest, back,
arms, legs and the like.
[0023] Yet in another aspect, the present disclosure features a
method of promoting a product including a composition containing a
natural extract by directing the user to apply said composition to
the hair, scalp or hairy skin areas, or non-glabrous skin, in order
to preserve the natural hair color, or to slow, or prevent or
reverse the decay in the natural pigment production of the hair
follicle, or to slow, or prevent or reverse the appearance of hair
graying.
[0024] In another aspect, the present disclosure relates to methods
of preserving the natural color of the skin, or of slowing the
uneven decay in the natural pigment production of the aging skin,
or of delaying, or slowing, or reducing the severity or the
visibility of loss-of-pigment lesions (e.g. IGH, "white spots", or
vitiligo), by applying a composition containing a safe and
effective amount of a natural extract. In another aspect the
present disclosure relates to methods of preserving the natural
color of the skin, or of slowing the development of pigmentary skin
loss, or of delaying, or slowing, or reducing the severity of
mottled pigment loss, by applying a composition containing a safe
and effective amount of a natural extract. In yet another aspect,
the natural extract could be supplemented with, enriched with or
combined with L-methionine.
[0025] In another aspect, the present disclosure relates to methods
of preserving the natural color of the skin, or of preventing the
decay in the uneven pigment production of the skin, or of reducing
the appearance of non-pigmented skin lesions, by applying a
composition containing a safe and effective amount of a natural
extract. In yet another aspect, the natural extract could be
supplemented with, enriched with or combined with L-methionine.
[0026] Yet in another aspect, the present disclosure relates to
methods of partially or completely reversing the uneven decay in
the pigment production of the skin, or reducing the appearance of
non-pigmented skin lesions, by applying a composition containing a
safe and effective amount of a natural extract. In yet another
aspect, the natural extract could be supplemented with, enriched
with or combined with L-methionine.
[0027] In another aspect, the present disclosure features a product
including a composition comprising a natural extract and
instructions directing the user to apply the composition to the
affected or desired skin areas, in order to preserve the natural
skin color, or to slow, or prevent, or reverse the decay in the
production of pigment in the skin, or to slow, or prevent or
reverse the appearance of non-pigmented skin lesions.
[0028] Yet in another aspect, the present disclosure features a
method of promoting a product including a composition containing a
natural extract by directing the user to apply said composition to
the affected or desired skin areas, in order to preserve the
natural color of the skin, or to slow, or prevent or reverse the
decay in the pigment production of the skin, or to slow, or prevent
or reverse the appearance of non-pigmented skin lesions.
[0029] In yet another instance, the present disclosure relates to
methods of enhancing skin, scalp, hair and nail health and
wellness, beautifying the skin, hair and nail, providing anti-aging
benefits, or enhancing the biological properties and the health and
wellness of elderly skin, by applying a composition containing a
safe and effective amount of a natural extract to the skin (both
glabrous and non-glabrous areas) to enhance skin health, wellness
and appearance. In yet another aspect, the natural extract could be
supplemented with, enriched with or combined with L-methionine. In
yet another aspect, the anti-aging benefits of the compositions of
this disclosure would include the desired structural, functional
and visual effects on wrinkles, sagging, "age spots", and other
signs and symptoms of facial skin aging. Yet in another aspect, the
geriatric skin benefits of the compositions of this disclosure
would include enhancing the structural and functional properties of
elderly nails, facial-, scalp- and body-skin, reducing dryness of
facial, scalp and body skin, reducing skin pruritis, reducing skin
and nail fragility, reducing the quantity and severity of
hematomas, reducing the quantity and the severity of skin tears and
other skin wounds, reducing skin infections, and enhancing wound
healing of skin wounds. Body skin is referred to all human skin
areas, including nails, and in particular to the skin of the arms,
hands, fingers, legs and feet.
[0030] In another aspect, the present disclosure features a product
including a composition comprising a natural extract and
instructions directing the user to apply the composition to the
affected or desired skin, scalp and nail areas, in order to enhance
skin, scalp and nail health and wellness, to reduce the signs of
skin aging, or to combat the reduced qualities and problems of
geriatric skin.
[0031] Yet in another aspect, the present disclosure features a
method of promoting a product including a composition containing a
natural extract by directing the user to apply said composition to
the affected or desired skin, scalp and nail areas, in order to
enhance skin, scalp and nail health and wellness, to reduce the
signs of skin, scalp, hair and nail aging, or to combat the reduced
qualities and problems of geriatric skin.
[0032] Other features and advantages of the present disclosure will
be apparent from the detailed description of the disclosure and
from the claims. It is believed that one skilled in the art can,
based upon the description herein, utilize the present disclosure
to its fullest extent. The following specific examples are to be
construed as merely illustrative and not limitative of the
remainder of the disclosure in any way whatsoever. Unless defined
otherwise, all technical and scientific terms used herein have the
same meaning as commonly understood by one of ordinary skill in the
art to which the disclosure belongs. Also, all publications, patent
applications, patents, and other references mentioned herein, are
incorporated herein by reference. Unless otherwise indicated, a
percentage refers to a percentage by weight (e.g. % (w/v)).
DETAILED DESCRIPTION
[0033] The present disclosure relates to the recognition that
certain natural extracts are very effective in the elimination of
hydrogen peroxide, and therefore they could be used for preserving
the natural color of skin and hair, or for preventing, or slowing,
or reducing or reversing the appearance of hair graying or
depigmented skin lesions, or for reducing the general signs of
skin, scalp, hair and nail aging and the specific signs of
geriatric elderly skin.
[0034] Amor Seco (Desmodium Adscendens, Desmodium coeruleum, D.
caespitosum, D. glaucescens, D. heterophyllum, D. oxalidifolium, D.
triflorum, Hedysarum adscendens, H. caespitosum, Meibomia
adscendens) is a tree species of the Acalyphoideae, native to South
America. It is locally known as tamanqueiro, tapia or amor seco. It
grows preferentially in riparian forests, reaching a height of
10-20 m. It is essentially an evergreen, though in the hot summer
months there is a more pronounced changeover of leaves, and
branches are denuded to some extent. Amor Seco leave powder is
produced from Amor Seco leaves, which are cleared of foreign
material and are milled and grinded. The powder is used as a food
additive (see e.g.
http://www.nutricargo.com/herb-powders/amor-seco-powder).
[0035] It was unexpectedly found that Amor Seco leave powder has
hydrogen peroxide degrading activity (see Example 1). Moreover,
exposure of human keratinocytes to Amor Seco leave powder results
in an enhancement of the endogenous cellular activity of the
keratinocytes in degrading or eliminating hydrogen peroxide (see
Example 2). Additionally, Amor Seco leave powder exhibited strong
activity against hydrogen-peroxide-induced oxidative stress
(example 3). These results suggest that Amor Seco leave powder
could be used topically, on skin, scalp, nail and hair, to reduce
hydrogen peroxide concentration, and therefore to be useful in this
disclosure. The topical use of Amor Seco leave powder should slow,
delay and reduce the progression of hair graying. Similarly, the
topical use of Amor Seco leave powder should reduce the visibility
of depigmented skin lesions and could reduce the signs of skin,
scalp, hair, and nail aging and enhance elderly skin properties. It
is expected that other plants of the family Fabaceae, and not only
those from the genus Desmodium, would have similar biological
properties and could also be used in a similar manner.
[0036] Yacon (Smallanthus sonchifolius, Syn.: Polymnia edulis, P.
sonchifolia, Peruvian ground apple) is a perennial plant
traditionally grown in the Northern and Central Andes from Colombia
to Northern Argentina for its crisp, sweet-tasting tuberous roots.
Commonly called "jicama" in Ecuador, yacon is sometimes confused
with this unrelated plant. Yacon is actually a close relative of
the sunflower and Jerusalem artichoke.
[0037] It was unexpectedly found that Yacon leave powder has
hydrogen peroxide degrading or eliminating activity (see Example
1). Moreover, exposure of human keratinocytes to Yacon leave powder
results in an enhancement of the endogenous cellular activity of
the keratinocytes in degrading or eliminating hydrogen peroxide
(see Example 2). Additionally, Yacon leave powder exhibited strong
activity against hydrogen-peroxide-induced oxidative stress
(Example 3). These results suggest that Yacon leave powder could be
used topically, on skin, scalp, nail and hair, to reduce hydrogen
peroxide concentration and provide beneficial effects. The topical
use of Yacon leave powder should slow, delay or reduce the
progression of hair graying. Similarly, the topical use of Yacon
leave powder should reduce the visibility of depigmented skin
lesions, and could reduce the signs of skin, scalp, hair, and nail
aging and enhance elderly skin properties. It is expected that
other plants of the family Asteraceae, and not only those from the
genus Smallanthus, would have similar biological properties and
could also be used in a similar manner.
[0038] The red microalgae Porphyridium (Genus: Porphyridium,
including, but not limiting to Phytoconis purpurea Bory de
Saint-Vincent, 1797, Porphyridium Nageli, Byssus purpurea Lamarck,
Olivia cruenta S.F.Gray, Olivia cruenta S.F.Gray, Porphyridium
cruentum (S.F.Gray) Nageli, Porphyridium marinum Kylin, Sarcoderma
sanguineum Ehrenberg, P.sigma.rphyridium sp. UTEX 637 or a strain
derived from Porphyridium sp. UTEX 637, Porphyridium cnientum UTEX
161 or a strain derived from Porphyridium omentum UTEX 161,
Porphyridium aerugineurn or a strain derived from Porphyridium
aerngineum, Porphyridium sordidum or a strain derived from
Porphyridium sordidum, or Porphyridium purpureum or a strain
derived from Porphyridium purpureum) is a unicellular red
(Rhodophyta) microalga, with cells of 10-20 .mu.M in diameter. Its
habitats include fresh water, brackish water, sea water and soil,
and it can grow under harsh climate conditions and high UV
exposure.
[0039] During the processing of the algae polysaccharide, the algae
biomass (the algae cells) is removed while the secreted
polysaccharide is retained. The precipitated algae biomass is
sometimes considered a waste product, which is discarded during the
production of the polysaccharide. The algae is rich in xanthine
derivatives, which are sometimes extracted from the biomass for
nutritional uses. In other times the algae pigments are extracted
from the biomass.
[0040] It was unexpectedly found that dried Porphyridium biomass
has hydrogen peroxide degrading and eliminating activity (see
Example 1). Moreover, exposure of human keratinocytes to dried
Porphyridium biomass results in an enhancement of the endogenous
cellular activity of the keratinocytes in degrading and eliminating
hydrogen peroxide (see Example 2). These results suggest that dried
Porphyridium biomass could be used topically, on skin, scalp, nail
and hair, to reduce hydrogen peroxide concentration and provide
beneficial effects. The topical use of dried Porphyridium biomass
should slow, delay and reduce the progression of hair graying.
Similarly, the topical use of dried Porphyridium biomass should
reduce the visibility of depigmented skin lesions, and could reduce
the signs of skin, scalp, hair, and nail aging and enhance elderly
skin properties. It is expected that other plants of the family
Porphyridiaceae, or of the Phylum Rhodophyta and not only those
from the genus Porphyridium, would have similar biological
properties and could also be used in a similar manner. Non-limiting
examples of other red microalgae suitable for this disclosure
include the unicellular algae of the Bangiophyceae,
Florideophyceae, Goniotrichales, Dixoniella grisea, or other member
of the Rhodophyta.
[0041] The precise concentrations, effects of the composition and
methods of this disclosure will vary with the area being treated,
the age, health and skin and hair type of the end user, the
duration and nature of the treatment, the specific composition
employed, the particular condition being treated, the particular
cosmetically- or pharmaceutically-acceptable carrier utilized, and
like factors.
[0042] The present disclosure describes a natural extract(s) or
their fraction(s), or combination(s) thereof (1) containing active,
non-denatured catalase, or (2) having a catalase-like activity, or
(3) having a catalase-enhancing activity, or (4) having a
catalase-stabilizing activity, or mixtures thereof. The natural
extract described in this disclosure can be, but is not limited to,
a plant extract, an algae extract, a yeast extract, a fungi
extract, a microorganism extract, or a fraction(s) of such
extract(s), or combinations thereof.
[0043] The natural extracts of this disclosure are aqueous. Aqueous
extracts are materials that were extracted by any solvent
consisting totally or partially of water, including, but not
limited to water itself, aqueous/alcoholic solvents in any
proportion, or solvents comprising water and a compound such as
propylene glycol, in any proportion. The aqueous extract could be
in a liquid form or could be dried out to a solid form.
[0044] When the aqueous extract is dried
[0045] In one instance, an enhancement of catalase production
within the natural source is achieved by (1) selecting relevant
genetic variants, or (2) using genetic engineering technologies, or
(3) controlling a timed and selective exposure (e.g. continuous,
pulsed, at a defined growth phase) to hydrogen peroxide, or (4)
controlling a timed and selective exposure to different wavelengths
(e.g. UV, blue, or others), or (5) providing certain ingredients
(e.g. chemicals, nutritional agents) that affect the growth or the
biological properties of the natural source, before collecting the
natural source for extraction, or combinations thereof.
[0046] In another instance, the natural source (1) could be grown
under nutritional conditions that enrich for L-methionine, or (2)
could be grown under nutritional conditions that enhance the
production of L-methionine, or (3) could be supplemented with
L-methionine during growth, or (4) could be engineered to produce
or retain L-methionine, or (5) could be combined with L-methionine
during the preparation and processing of the natural extract. The
L-methionine enriched extract could be used in all the compositions
and methods disclosed herein, and is expected to have superior
effects in reducing hydrogen peroxide concentrations in skin,
scalp, hair and nail. In one example the fertilization of plants is
performed with a micronutrient composition that includes high
levels of L-methionine. Another example relates to the enrichment
of the growth medium of algae, fungi, yeast and other
microorganisms with about 0.1-100 mM L-methionine, which can lead
to increased methionine in the extracts prepared from these
materials. In addition or as an alternative, the natural extract
(e.g. Amor Seco leave powder, Yacon leave powder or dried
Porphyridium biomass, or their aqueous extracts) can be combined
with 0.1-100 mM of L-methionine, at any stage of the natural
extract production and processing.
[0047] The effective concentration of L-methionine in the
composition should be about the same as the concentration of
hydrogen peroxide within the affected tissue (e.g. the graying hair
follicle, the vitiligo lesion, the elderly skin, and the like).
This concentration varies with the age, gender, skin type and hair
type of the individual, and with their specific need (e.g.
hypo-pigmented lesions, gray hair, elderly skin, and the like).
Lower concentrations (high micromolar range) would be effective for
geriatric skin, while higher concentrations (low milimolar range)
would be required for affecting gray hair and hypo-pigmentary skin
lesions.
[0048] In another instance, the natural extracts of this disclosure
are non-denatured, and contain stable and active proteins like the
catalase enzyme or the glutathione peroxidase enzyme.
"Denaturation" is defined in the Bantam Medical Dictionary (1990
edition) as "the change in the physical and the physiological
properties of a protein, that are brought about by heat, X-rays or
chemicals. These changes include loss of activity in the case of
enzymes". What is meant by "non-denatured product" is a natural
product in which the processing for the derivation of such product
(e.g., the temperature, extraction media) did not eliminate its
specific hydrogen peroxide elimination activity.
[0049] In yet another aspect, extracts of this disclosure could be
further purified, or concentrated or fractionated or combined to
increase the content of the catalase enzyme or the glutathione
peroxidase enzyme or the catalase-like activity.
[0050] Awareness to environmental concerns has increased, and
"green" considerations are incorporated into products and
disclosures. In one instance, the natural sources of this
disclosure would consist of unused or "wasted" natural products.
Examples for such sources include, but are not limited, to leaves
and stems that are not collected in the field, or are collected and
then separated, when fruits, vegetables, roots and grains are
harvested, and might be otherwise discarded or provided for animal
feed. Other examples include plants parts that are removed during
food processing, like legume pods or fruit and vegetable peels.
Another example includes botanical parts that are removed during
the processing or production of specific botanical products, such
as the algae biomass that is removed during the production of the
algae polysaccharide.
[0051] Extracts of this disclosure can be tested for their hydrogen
peroxide eliminating activity using colorimetric or
spectrophotometric assays such as the Catalase Assay Kit of Cayman
Chemical (#707002), the BioVision Inc. Catalase Activity
Colorimetric/Fluorometric Assay Kit (#K773-100), The Sigma Aldrich
Enzymatic Assay of Catalase (EC 1.11.1.6) kit, the AmplexAE Red
Catalase Assay Kit (#A22180) of Molecular Probes, or the like. Such
assays are sensitive to detect pico units of catalase activity
within samples. The catalase enzyme itself can also be detected and
quantified within the extracts using standard procedures, however
the existence of the protein does not guarantee its activity, and
therefore the activity assays are preferred, and are used to define
the natural extracts.
[0052] In another instance, the natural extracts of this disclosure
contain catalase-like activity, namely the ability to degrade or
eliminate hydrogen peroxide, directly or indirectly, without
containing an intact catalase or glutathione peroxidase enzyme. In
one aspect, such extracts could be further concentrated, or
purified, or fractionated, or combined to increase the content of
the catalase-like activity. In another aspect, such extracts could
be tested for their hydrogen peroxide eliminating activity using
similar assays to those describe above, as such assays are
measuring the reaction products and not the enzyme concentrations.
Such extracts could be defined, therefore, by their hydrogen
peroxide eliminating activity.
[0053] Topically applied agents of relatively large molecular
weight have the potential to reach pharmacologically active
concentrations at the hair bulb, if properly formulated with
adequate delivery vehicles. The delivery occurs via the junction of
the internal and external root sheath, and the higher molecular
weight molecules are confined to the follicular structures
immediately surrounding the hair shaft. (J Pharm Sci. 1997
86(9):1022-9. Description of the intrafollicular delivery of large
molecular weight molecules to follicles of human scalp skin in
vitro. Lieb L M, Liimatta A P, Bryan R N, Brown B D, Krueger G G).
However, it is desired sometimes to have active ingredients of
smaller molecular weight delivered to the hair follicles, or
directly to the skin, to increase and enhance their effective
concentrations and their efficacy. In yet another example, the
natural extracts containing catalase-like activity of this
disclosure could be size fractionated and selected, and then
concentrated, or combined, to increase the concentration of smaller
molecular weight ingredients with the desired activity within the
composition. In one aspect, the molecular weight of the ingredients
having the desired activity is smaller than that of catalase. In
another aspect, the molecular weight of the ingredients having the
desired activity is smaller than 1 kDa. The size of .about.0.5 kDa
is considered the largest for passive skin penetration (Bos J D,
Meinardi M M H M. The 500 Dalton rule for the skin penetration of
chemical compounds and drugs. Exp Dermatol. 2000 9:165-16)]. In yet
another aspect, the molecular weight of the ingredients having the
desired activity is smaller than .about.0.5 kDa.
[0054] The natural extract of this disclosure could enhance the
gene expression, or the protein translation, or the stability, or
the activity of the endogenous catalase enzyme or the endogenous
glutathione peroxidase enzyme in the skin, or the nail, or the hair
follicle. In one aspect, such extracts could be further
concentrated, or purified or fractionated or combined to enhance
such an activity. In one aspect, such extracts could be defined by
their hydrogen peroxide eliminating activity.
[0055] In yet another example, extracts of this disclosure that
enhance the expression, or the stability, or the activity of the
endogenous skin, scalp, nail, or hair follicle catalase enzyme
and/or glutathione peroxidase enzyme, could be size fractionated
and selected, and then concentrated, or combined, to increase the
concentration of smaller molecular weight ingredients with the
desired activity in the composition. In one aspect, the molecular
weight of the ingredients that enhance the expression, or the
stability, or the activity of the endogenous skin, nail, scalp or
hair follicle catalase and/or glutathione peroxidase enzyme is
smaller than that of catalase. In another aspect, the molecular
weight of the ingredients that enhance the expression, or the
stability, or the activity of the endogenous skin or hair follicle
catalase and/or glutathione peroxidase enzyme is smaller than 1
kDa. In yet another aspect, the molecular weight of the ingredients
that enhance the expression, or the stability, or the activity of
the endogenous skin or hair follicle catalase and/or glutathione
peroxidase enzyme is smaller than 0.5 kDa.
[0056] The natural extracts of this disclosure can be evaluated for
their catalase and/or glutathione peroxidase enhancing activity in
skin, scalp, hair or nail or in their relevant in vitro systems.
Such in vitro systems include, but are not limited to epidermal, or
dermal, or epidermal-dermal skin constructs that can be obtained
commercially, e.g. from MatTek corporation, monolayers of
melanocytes, epidermal keratinocytes, dermal fibroblasts or
follicular keratinocytes that can be obtained commercially, e.g.
from ATTC, skin explants with and without hair that can be obtained
from e.g. human and animal biopsies, cultured hair plugs, and the
like. An example of such an assay includes the incubation of the
biological samples with and without the extracts of this
disclosure, using a range of safe and effective concentrations, for
different time points (e.g. 24, 48 and 96 hours). The biological
samples can be homogenized and tested for hydrogen peroxide
elimination activity using the assays described above, or they can
be tested for irritation biomarkers, sensitization biomarkers,
inflammatory responses, anti-oxidant responses and the like using
known procedures. Additionally, they can be tested for the enhanced
expression or stability of the endogenous catalase and/or
glutathione peroxidase enzyme, or of other cellular anti-oxidant
enzymes, using standard molecular procedures. Additionally, the
biological samples can be challenged (e.g. with UV irradiation or
hydrogen peroxide exposure) and their viability and their
biological responses and catalase and/or glutathione peroxidase
expression and activity can be evaluated using known and validated
assays for e.g. catalase and/or glutathione peroxidase expression
or activity, irritation, sensitization, inflammatory responses,
anti-oxidant responses and the like. Viability can be evaluated
with e.g. a standard MTT assay. Irritation and inflammatory
responses can be evaluated e.g. by measuring the release of
inflammatory cytokines such as IL-1 alpha into the culture media,
using standard ELISA techniques. Anti-oxidant responses can be
measured with standard assays e.g. using ABTS (trolox equivalent)
or DPPH kits. Catalase and/or glutathione peroxidase expression and
stability can be evaluated using standard techniques such as QPCR
or protein immune-reactivity over time.
[0057] The novel compositions of this disclosure contain aqueous
natural extracts, which might be present in many forms such as of a
fluid or a solid. In one example, the aqueous natural product is in
the form of a suspension. One way to make the natural suspension is
to soak the fresh or dry natural sources in a liquid (e.g. water)
for from about 10 minutes to several hours, and after they were
fully hydrated to press, or grind them, to allow the ingredients to
be extracted. Procedures such as pressure disruption, sonication
and milling (e.g., jet milling and ball milling, sometimes
performed under cold or freezing conditions) can be used instead of
grinding, to break down the biological material for improved
extraction. The suspension may be filtered to remove any residual
parts. In one example the suspension is filtered using a 0.2 micron
pore size filter. The natural suspension could be dried by e.g.
tray drying, spin drying, rotary drying, spin flash drying, or
lyophilization.
[0058] Another example is to press the natural sources and collect
the "juice" created by the pressing of the natural material. After
collection, the suspension may be filtered to remove any residual
parts. In one instance the suspension is filtered using a 0.2
micron pore size filter. The natural suspensions and solutions used
in this disclosure can use fresh natural sources, or may be made
from dry, powdered natural sources and liquid. The powder is milled
(e.g. by pressure disruption, sonication, jet milling or ball
milling and the like) from the natural sources (e.g. botanical
parts, algae, fungi or microorganism cultures and the like) and may
also be dried (e.g. lyophilized, spin-dried, spray dried, tray
dried, spin flash dried, freeze-dried and the like) and the
resulting powder may or may not be filtered. In one example the
suspension or solution is filtered using a 0.2 micron pore size
filter. Such prepared suspension or solutions may have from about
0.01 to about 90% by weight dry powder.
[0059] Another example is the use of natural extract powder, made
from, e.g. lyophilized, spray dried or freeze-dried suspension as
described above and the like, with the addition of liquid and with
or without filtration or homogenization.
[0060] Other known methods of extraction could also be used to
create the active ingredients used in this disclosure. For example,
but not limited to, the active ingredients could be extracted from
ground natural sources using ethanol/water mixtures, followed by
the removal of the ethanol from the extract, in such ways that the
specific catalase and/or glutathione peroxidase activity or
catalase-related activity of the preparation will be retained.
Known methods of fractionation could be used to separate and
concentrate the desired activities of this disclosure, or to size
fractionate the natural extract, or to eliminate inhibitory or
undesired activities. In one example, the natural extracts of this
disclosure could be produced using electro-kinetic potential (Zeta)
fractionation and separation (e.g. with the Zeta Fraction.TM.
Technology
(http://www.sc.akzonobel.com/en/personalcare/Pages/zeta-fraction.aspx)).
Zeta Fraction technology can selectively isolates intracellular
components from biological sources, e.g. from plants "juices",
without the use of external solvents for separation. Targeted
fractions with active catalase and/or glutathione peroxidase, or
with catalase-like activity, could be mechanically separated based
on their electro-kinetic (zeta) potential, to be used in
compositions of this disclosure. The zeta fractions could be
further processed (e.g. filtered, dried, combined) as described
above.
[0061] Yet in another example, the fresh or dry natural source of
this disclosure could be grinded or milled as described above,
suspended in a liquid (e.g. water) and then undergo a mechanical
homogenization, or a particle-size reduction (e.g. by sonication,
or shear mixing, or homogenization, or any other known semi solid
processing, sometimes performed under cold or freezing conditions)
to create a homogenate (so that the cells or biomass of the natural
source are broken or disrupted). The resulting suspension could
then be separated (e.g. by centrifugation of e.g. 500-1,000 RPM for
10 minutes, or by similar procedures), and the supernatant could be
further size-selected (e.g. for particles of the size of 0.2 micron
or smaller, e.g. by size filtration membranes, ultra-filtration and
the like). The resulting suspension or solution of, e.g., 0.2
micron size particles or smaller could be used for the compositions
of this disclosure "as is", or could be dried-out using standard
procedures (e.g. lyophilized, spin-dried, spray dried, tray dried,
spin flash dried, freeze-dried and the like) to create a more
refined natural extract. All such processes should not create
unreasonable heat that might reduce or eliminate the biological
activity of the natural extract.
Cosmetic or Pharmaceutical Carrier
[0062] Useful compositions can include stabilization systems, which
may include one or more preservatives, or one or more
anti-oxidants, or one or more chelating agents, or combinations
thereof. Preservatives are useful for substantially preventing
microbial decomposition. Examples of preservatives include, but are
not limited to phenoxyethanol, parabens and natural preservatives,
and are known to the ones skilled in the art. Other examples of
preservatives could be found on pages 1654-55 of the International
Cosmetic Ingredient Dictionary and Handbook, eds. Wenninger and
McEwen (CTFA, 7th ed., 1997), hereinafter referred to as the
"Cosmetic Handbook." The composition may comprise from about 0.01%
to about 20%, by weight (sometimes more preferably, from about 0.5%
to about 5%, by weight) of preservative. Microbial contamination
can also be eliminated by gamma irradiation, or electron-beam
irradiation, or X-ray irradiation and the like, by microfiltration,
or by other standard procedures (e.g. brief heat treatments) that
do not result in the elimination of the specific activity described
in this disclosure.
[0063] Antioxidants and/or chelating agents may also be used to
increase shelf life and stability of the compositions. Antioxidants
may be added both for formulation stabilization and for biological
efficacy. Antioxidant compounds and their derivatives include, but
are not limited to, water-soluble antioxidants such as sulfhydryl
compounds and their derivatives (e.g., sodium metabisulfite and
N-acetyl-cystein), lipoic acid and dihydrolipoic acid, resveratrol,
acetyl-cysteine (Iniferine.RTM.) or lactoferrin, and ascorbic acid
and ascorbic acid derivatives (e.g., ascorbyl palmitate and
ascorbyl polypeptide). Oil-soluble antioxidants suitable for use in
the compositions of this disclosure include, but are not limited
to, butylated hydroxytoluene, retinoids (e.g., retinol and retinyl
palmitate), tocopherols (e.g., tocopherol acetate), tocotrienols,
and ubiquinone. Natural extracts containing antioxidants suitable
for use in the compositions of this disclosure, include, but are
not limited to, extracts containing flavonoids and isoflavonoids
and their derivatives (e.g., genistein and diadzein), extracts
containing resveratrol, extracts containing polyphenols and the
like. Examples of such natural extracts include, but are not
limited to, grape seed, tea, pine bark, Aloe Vera, propolis, or
legume extracts. Small molecules with specific antioxidant
activity, including, but not limiting to catalase mimetics, SOD
mimetics, salem-Mn complexes (e.g. the EUK family of compounds),
and the like, are also suitable for use in compositions of this
disclosure. Other examples of antioxidants may be found on pages
1612-13 of the Cosmetic Handbook. The compositions of the present
disclosure may comprises the antioxidant in an amount of from about
0.001% to about 20%, by weight (e.g., from about 0.01% to about 10%
by weight) of the composition.
[0064] Chelating agents are also useful in assisting the
stabilization of compositions. Examples of chelating agents
include, but are not limited to EDTA and derivatives thereof (e.g.,
disodium EDTA and dipotassium EDTA), Iniferine lactoferrin, and
citric acid. Other examples of chelating agents are listed on page
1626 of the Cosmetic Handbook. The compositions of the present
disclosure may comprise the chelating agent in an amount of from
about 0.001% to about 20%, by weight (e.g., from about 0.01% to
about 10% by weight) of the composition.
[0065] Thickening agents (e.g., thickeners or viscosity enhancing
agents) may be used to alter the viscosity of useful compositions.
The desired viscosity of the composition will depend upon the
intended use (e.g., as a shampoo, conditioner, mousse, cream,
lotion, ointment, serum, spray, gel, stick, or the like). For
example, in applications such as bath or wash products, the
viscosity of the composition should be relatively low, similar to
an aqueous solution. Application as a cream, lotion, or gel will
have slightly higher viscosity (e.g., between about 100 cps and
100,000 cps). Thickening agents that can be added to the
compositions of this disclosure to alter viscosity include polymers
such as sepigels or polyacrylates (e.g., polyacrylamide, other
carbomers) or polysaccharides (e.g. chitosan). Other examples of
viscosity modifying agents are listed on pages 1692-97 of the
Cosmetic Handbook. To achieve the appropriate viscosity,
compositions of the present disclosure may comprise from about
0.01% to about 20%, by weight (e.g., from about 0.1% to about 5%,
by weight) of a thickening agent.
Additional Cosmetically Active Agents
[0066] The compositions containing natural extracts can also
contain other cosmetically active agents (e.g., a synthetic
compound(s) or a compound(s) isolated from a natural source, or a
natural extract(s) containing a mixture of compounds that has a
cosmetic or therapeutic effect on the tissue). The useful
compositions described herein may also contain other skin-, hair-
and nail-beneficial agents in addition to the natural product(s).
Examples of such agents include, but are not limited to,
anti-inflammatory agents (such as corticosteroids, NSAIDs, or
botanical extracts with anti-inflammatory activity such as Aloe
Vera), anti-pruritic agents, topical analgesics, antioxidants (e.g.
vitamin C and derivatives, vitamin E and derivatives, botanical
extracts with antioxidant activity), agents with catalase-like or
SOD-like activity (e.g. salem MN compounds such as the family of
EUK agents), epidermal-, dermal- and follicular-regenerating agents
and agents that enhance skin, hair and nail tissue regeneration
agents (including e.g. retinoids, retinoid-derivatives, retinol,
retinal, alpha hydroxy acids, co-enzyme-Q, growth factors, and
others), antibiotics and anti-microbial agents, anti-mycotic
agents, anti-yeast agents, anti-parasites, agents that enhance the
immune system, dandruff-control and shine-control agents (including
e.g. miconazole, ketoconazole, elubiol, itraconazole, coal tar and
the like agents), detergents, surfactants, moisturizers, nutrients,
vitamins, minerals, energy enhancers, hair or nail growth enhancing
agents, agents that delay hair growth, agents for skin
conditioning, odor-control agents (such as e.g. odor masking or
pH-changing agents), deodorants, antiperspirants, colorants,
pigments, color-masking agents, agents that enhance pigment
production or pigment delivery (e.g. such as peptides, PAR-2
activators, MC1R ligands, alpha MSH and its mimetics, and the
like), agents that enhance or inhibit pigment production, agents
that affect methionine sulfoxide reductase activity (e.g.
L-methionine, that could prevent the oxidation of methionine) and
other agents that enhance skin, scalp, hair or nail wellness and
beauty that are known to those of ordinary skill in the art.
[0067] The useful compositions described herein may also contain
compounds that enhance the feel of the composition on the skin,
scalp, hair or nail of the user. Examples of such compounds
include, but are not limited to, oils, silicones (e.g., siloxane
polymers such as dimethicone), polymers, polysaccharides, and
skin-conditioning agents such as emollients, and humectants. Some
examples of such skin conditioning agents may be found of pages
1656-1670 of the Cosmetic Handbook. In addition, the compositions
useful herein can contain conventional cosmetic adjuvants, such as
colorants (such as dyes and pigments), opacifiers (e.g., titanium
dioxide), and fragrances, which are known to those skilled in the
art in the field of this disclosure. The composition and
formulations containing such compositions of the present disclosure
may be prepared using methodology that is well known by an artisan
of ordinary skill.
Forms
[0068] The compositions of this disclosure may be used, but are not
limited to, with cosmetically or pharmaceutically accepted forms
and carriers such as solutions, suspensions, emulsions (including
microemulsions and nanoemulsions), lotions, creams, gels, sticks,
sprays, ointments, cleansing liquids, washes, solid bars, shampoos,
hair conditioners, nail polishes, nail strengtheners, pastes,
foams, powders, mousses, shaving creams, shaving gels, wipes,
patches, hydrogels, film-forming products, masks, liquid drops,
muco-adhesives, and the like. The compositions of this disclosure
may be packaged in a tube, a sealed packet, a jar, a pump, a
bottle, a can, a pledget, a towelet, a dispenser, a wipe, a spray
can or the like. An airtight or a light-blocking package (e.g. such
as an aluminum tube, aluminum pocket, pump, or laminated tube), can
also be used to further enhance product stability.
[0069] In one aspect, the compositions of this disclosure further
comprise of delivery systems that enable to maintain an active
catalase and/or glutathione peroxidase enzyme or catalase-related
activity, and deliver the active ingredients, possibly including
active proteins, into the hair follicles, or into the nail, or into
the skin. Such delivery systems may include micro- and
nano-particles, liposomes, aspasomes, organogels, niosomes,
transferosomes, patches, micro- and nano-needles, micro- and
nano-capsules, micro- and nano-sponges, films, polymers, and the
like.
Compositions and Methods
[0070] The present disclosure features a method of reducing the
hair graying process of a mammal, said method comprising the step
of applying to the scalp or to other desired non-glabrous skin
areas a safe and effective amount of the compositions of this
disclosure. The frequency of the application will vary with the
area being treated, the age, health, hair type and skin type of the
end user, the duration and nature of the treatment, the specific
composition employed, the particular cosmetically- or
pharmaceutically-acceptable carrier utilized, and like factors. For
example, in some instances the application would be periodic, while
in other instances the application would be once or twice
daily.
[0071] Additionally, the present disclosure features a method of
reducing non-pigmented lesions on the skin of a mammal (e.g. of an
age-induced or UV-induced pigment loss spots, or IGH, or vitiligo),
said method comprising the step of applying to the skin areas a
safe and effective amount of the compositions of this disclosure.
The frequency of the application will vary with the area being
treated, the age, health and skin type of the end user, the
duration and nature of the treatment, the specific composition
employed, the particular cosmetically- or
pharmaceutically-acceptable carrier utilized, and like factors. For
example, in some instances the application would be periodic, while
in other instances the application would be once or twice daily.
Additionally, the present disclosure also features a method of
reducing the signs and symptoms of skin, scalp, hair and nail aging
and enhancing the biological properties and the health and
wellbeing of geriatric skin, said method comprising the step of
applying to the skin, scalp, hair or nail areas in need a safe and
effective amount of the compositions of this disclosure. The
frequency of the application will vary with the area being treated,
the age, health and skin type of the end user, the duration and
nature of the treatment, the specific composition employed, the
particular cosmetically- or pharmaceutically-acceptable carrier
utilized, and like factors. For example, in some instances the
application would be periodic, while in other instances the
application would be once or twice daily.
[0072] As used herein, "safe and effective amount" means an amount
of the composition sufficient to induce a desired effect on hair,
nail or skin, but low enough to avoid serious side effects. The
safe and effective amount of the composition will vary with the
area being treated, the age, health, hair type and skin type of the
end user, the duration and nature of the treatment, the specific
composition employed, the particular cosmetically- or
pharmaceutically-acceptable carrier utilized, and like factors.
[0073] It is understood that while the disclosure has been
described in conjunction with the detailed description thereof,
that the foregoing description is intended to illustrate and not
limit the scope of the disclosure.
EXAMPLE 1
[0074] This study evaluated the hydrogen peroxide breakdown
activity of test agents. A Catalase assay kit was obtained from
Cayman Chemical Co. (Ann Arbor, Mich.). The assay measures hydrogen
peroxide elimination activity (e.g. catalase activity) using
Purpald (4-amino-3-hydrazino-5-mercapto-1,2,4-triazole) as
chromogen in a colorimetric assay. The testing involves the changes
in optical density (OD) at 540 nm, which is proportional to the
effective activity present in the sample based on the reaction with
methanol in the presence of hydrogen peroxide. Purpald, used as
chromogen, forms a bicyclic heterocycle with the formaldehyde
produced, which upon oxidation changes from colorless to purple
color.
[0075] Sample powders of the naturals were suspended in water or
PBS at 5% (w/v), sonicated to break the material to sub-micron
particles, homogenized, and centrifuged at 1,000 RPM for 10 min to
remove insoluble material. Serial dilutions were prepared for each
test material and mixed with methanol and hydrogen peroxide in
assay buffer solution. Reaction was set for 20 minutes at room
temperature. All samples were compared to assay buffer-treated
samples (used as negative control). Catalase enzyme standard,
derived from bovine liver, was used as positive control. Optical
density changes at 540 nm were evaluated after addition of
potassium hydroxide, Purpald and potassium periodate.
[0076] The results of this study are shown in Table 1. These
results show that the dry leave powders of Amor Seco and Yacon and
the dried Porphyridium biomass possess high hydrogen peroxide
eliminating activity.
[0077] As a reference and for comparison, the literature (Nadira
Binte Samad, Trishna Debnath, Michael Ye, Abul Hasnat, Beong Ou
Lim. In vitro antioxidant and anti-inflammatory activities of
Korean blueberry (Vaccinium corymbosum L.) extracts. Asian Pac J
Trop Biomed 4(10): 807-815 (2014)) refers to two Korean blueberry
(Vaccinium corymbosum L.) leaf extracts that are known to have
strong antioxidant activities. These extracts were documented to
have catalase activity of up to 0.67 nmol/min/ml at 0.33% (w/v). In
contrasts, the natural extracts of this disclosure, at a lower
(0.1% w/v) concentration, had their activity ranges from 1.5-2.5
nmol/min/ml.
TABLE-US-00001 TABLE 1 Hydrogen peroxide elimination activity of
test agents Yacon leave powder Amor Seco leave powder Dried
Porphyridium biomass Formaldehyde Activity Formaldehyde Activity
Formaldehyde Activity Agent [.mu.M] [nmol/min/mL] [.mu.M]
[nmol/min/mL] [.mu.M] [nmol/min/mL] (w/v) (Avg .+-. StDev) (Avg
.+-. StDev) (Avg .+-. StDev) (Avg .+-. StDev) (Avg .+-. StDev) (Avg
.+-. StDev) 0.001% 36.8 .+-. 22.6 1.8 .+-. 1.1 29.8 .+-. 13.9 1.5
.+-. 0.7 21.2 .+-. 1.0 1.1 .+-. 0.1 0.01% 23.5 .+-. 5.6 1.2 .+-.
0.3 32.7 .+-. 9.6 1.6 .+-. 0.5 17.1 .+-. 2.0 0.9 .+-. 0.1 0.05%
20.0 .+-. 4.6 1.0 .+-. 0.2 31.0 .+-. 11.2 1.5 .+-. 0.6 44.3 .+-.
12.8 2.2 .+-. 0.6 0.1% 31.0 .+-. 16.5 1.5 .+-. 0.8 56.4 .+-. 21.3
2.8 .+-. 1.1 53.5 .+-. 18.1 2.7 .+-. 0.9 0.5% 42.6 .+-. 16.5 2.1
.+-. 0.8 92.3 .+-. 8.7 4.6 .+-. 0.4 * * 1% 61.6 .+-. 23.9 3.1 .+-.
1.2 144.9 .+-. 18.7 7.2 .+-. 0.9 * * 5% 188.3 .+-. 22.0 9.4 .+-.
1.1 550.2 .+-. 20.8 27.5 .+-. 1.0 * * (*) The red-brown color of
this natural extract, at higher testing concentrations, was
stronger than the Purpald red-purple readout color, and therefore
prevented an accurate reading of the results.
These results indicate that the dry leave powders of Amor Seco and
Yacon and the dried Porphyridium biomass have high hydrogen
peroxide eliminating activity, and therefore they are suitable, at
concentrations of from about 0.001% (w/v) and higher, for use in
the topical preparations of this disclosure.
EXAMPLE 2
[0078] This study evaluated the effect of test materials on the
endogenous cellular hydrogen peroxide degrading and eliminating
activity of cultured normal human keratinocytes. Protein lysates of
treated cells were used to measure hydrogen peroxide degrading
activity using Purpald
(4-amino-3-hydrazino-5-mercapto-1,2,4-triazole) as chromogen in a
colorimetric assay. The testing involved the changes in optical
density (OD) at 540 nm, which is proportional to the effective
activity present in the sample based on the reaction with methanol
in the presence of hydrogen peroxide. Purpald, used as chromogen,
forms a bicyclic heterocycle with the formaldehyde produced, which
upon oxidation changes from colorless to purple color. Sample
powders of the natural test agents were suspended in phosphate
buffer (1.times. PBS) at 5% w/v, and were homogenized by
sonication. Following a 1,000 RPM spin for 10 minutes, the
supernatants were sterilized by filtration using a 0.2 .mu.m
syringe filter, as described in Example 1. The samples (sonicated
filtered supernatants of the 5% suspensions) were then serially
diluted to the desired test concentrations. Primary normal human
epidermal keratinocytes (NHEKs) were seeded on 6-well plates and
cultured for 24 hours. Subsequently, cells were treated with or
without test materials, at 0.005, 0.05 and 0.5% (concentrations
refer to the original 5% suspensions) in culture media, once daily,
for 3 days. Cells were harvested on the 4.sup.th day and then lysed
and total protein concentrations in the lysates were measured using
the BSA-Bradford assay. Cell lysates were mixed with methanol and
hydrogen peroxide in assay buffer. Reaction was set for 20 minutes
at room temperature. All samples were compared to assay
buffer-treated cells (used as negative control). Catalase enzyme
standard, derived from bovine liver, was used as positive control.
Optical density changes at 540 nm were evaluated after addition of
potassium hydroxide, Purpald and potassium periodate. For the
assay, average absorbance was calculated and subtracted from the
negative control for each sample and standards.
[0079] The results of this study are shown in Table 2. These
results show the hydrogen peroxide degrading activity induced by
each test agent within the treated keratinocytes, as compared to
the endogenous activity of the untreated keratinocytes. All test
materials produced a dose-responsive increase in the keratinocyte
endogenous activity of hydrogen peroxide elimination. The untreated
keratinocytes showed an activity of 1.5.+-.0.2 Unit/mg protein
(U/mg), and the test agents, at 0.5% (w/v), were able to increase
this activity up to more than 210% (3.2.+-.0.1 (U/mg)).
[0080] As a reference and for comparison, a Camellia japonica
extract with a strong antioxidant activity, at 0.005%, was reported
to enhanced catalase activity of HaCaT keratinocytes by about 50%
only, and an ethanolic fraction of Sargassum muticum extract, at
10%, enriched for anti-oxidant activity, enhanced HaCaT cells
catalase activity by 25% only [Antioxidant Effects of the Ethanol
Extract from Flower of Camellia japonica via Scavenging of Reactive
Oxygen Species and Induction of Antioxidant Enzymes. Mei Jing Piao,
Eun Sook Yoo, Young Sang Koh, Hee Kyoung Kang, Junoh Kim, Yong Jin
Kim, Hak Hee Kang and Jin Won Hyun, Int. J. Mol. Sci. 2011,
12:2618-2630), (Protective Effect of the Ethyl Acetate Fraction of
Sargassum muticum Against Ultraviolet B--Irradiated Damage in Human
Keratinocytes. Mei Jing Piao, Weon Jong Yoon, Hee Kyoung Kang, Eun
Sook Yoo, Young Sang Koh, Dong Sam Kim, Nam Ho Lee and Jin Won
Hyun, Int. J. Mol. Sci. 2011, 12:8146-8160).
TABLE-US-00002 TABLE 2a Catalase Assay measurements Test Group
Activity/total protein (U/mg) Catalase enzyme 8.6 .+-. 0.6
(positive control) Untreated cells 1.5 .+-. 0.2 (negative
control)
TABLE-US-00003 TABLE 2b Cellular hydrogen peroxide elimination,
activity of test agents/total protein (U/mg) Test Material Yacon
leave Amor Seco leave Dried Porphyridium (%, w/v) powder powder
biomass 0.005 1.5 .+-. 0.1 2.0 .+-. 0.3 2.7 .+-. 0.1 0.05 1.8 .+-.
0.1 2.1 .+-. 0.4 3.0 .+-. 0.1 0.5 2.6 .+-. 0.1 2.5 .+-. 0.2 3.2
.+-. 0.1
The activity (U) is defined as nmol/min/mL. The activity is
normalized to the total protein amount in each cell lysate sample,
which is defined as U/mg.
[0081] These results show that exposure of human keratinocytes to
Yacon leave powder, or Amor Seco leave powder, or dried
Porphyridium biomass powder, results in an enhancement of the
endogenous cellular activity of the keratinocytes, increasing their
ability to remove, degrade or eliminate hydrogen peroxide. These
results suggest that these agents could be used topically, for
skin, scalp, hair and nail, to reduce hydrogen peroxide
concentration, and therefore to be useful in this disclosure. The
topical use of either Yacon leave powder, or Amor Seco leave powder
or dried Porphyridium biomass powder, should slow, delay and reduce
the progression of hair graying, which is initiated and enhanced by
high endogenous hydrogen peroxide levels. Similarly, the topical
use of Yacon leave powder, or Amor Seco leave powder, or dried
Porphyridium biomass, should reduce the progression and the
visibility of depigmented skin lesions, the signs of skin, scalp,
hair, and nail aging, and the problems associated with geriatric
skin.
EXAMPLE 3
[0082] The purpose of this study was to evaluate intracellular
antioxidant activity of test materials in cultured human epidermal
keratinocytes, in response to a hydrogen peroxide insult. Cells
were treated with test materials, labeled with H2DCFDA and later
exposed to hydrogen peroxide. Relative fluorescence was measured as
indicator for intracellular reactive oxygen species (ROS). The
testing involved changes in fluorescence, which is proportional to
an effective intracellular antioxidant activity when comparing
untreated and hydrogen peroxide-only treated samples.
[0083] Test agents were stored at room temperature until use.
Sample powders were suspended in phosphate buffer (1.times. PBS) to
make 10 mg/mL (1% w/v) stock solutions, vortexed for 1 minute,
sonicated on ice for 10 minutes at 30-50% output, centrifuged at
1000 rpm for 10 minutes at 4.degree. C., and the supernatants were
sterilized using 0.2 .mu.m-syringe filter. Such homogenized
solutions were prepared for each test material.
[0084] Primary normal human epidermal keratinocytes (NHEKs) were
seeded on 96-well plates and cultured until reaching 75-80%.
Subsequently, cells were treated with or without test materials in
culture media for 24 hours. Test materials were created by diluting
(1:10) the stock solutions in fresh EpiLife medium to make 0.05 and
0.1% (w/v) final concentrations. Untreated cells received equal
volume of fresh EpiLife medium without test materials. At 24 hours,
cells were labeled with the cell-permeant
2',7'-dichlorodihydrofluorescein diacetate (H.sub.2DCFDA) for 60
minutes and intracellular ROS levels were induced with hydrogen
peroxide treatment (250 .mu.M) for 30 minutes. Relative
fluorescence at 492 nm (Excitation) and 535 nm (Emission) was
measured using a plate reader.
[0085] Average fluorescence was calculated for each sample and
compared to untreated (no H.sub.2O.sub.2) cells used as negative
control. Results produced by H.sub.2O.sub.2-only treated cells
showed that hydrogen peroxide produced a significant increase in
relative fluorescence indicating an increase in intracellular ROS
levels.
[0086] The results of this study are shown in Table 3. Amor Seco
leave extract and Yacon leave extract produced a significant
decrease in relative fluorescence when tested at 0.05% (w/v) and
0.1% (w/v). Amor Seco leave extract induced an intracellular
anti-ROS activity with 92-100% inhibition. Yacon leave extract led
to a 49-67% inhibition. The Porphyridium biomass extract could not
be evaluated in this study, as its fluorescence analysis documented
strong auto-fluorescence that masked the readout of this assay.
TABLE-US-00004 TABLE 3a Summary results of H2DCFDA fluorescence* %
Relative Fluorescence (Sample/Untreated) Test Material Average SEM
Untreated 100.0 0.7 H2O2 (0.25 mM) 251.9 9.5 H2O2 + Yacon (0.05%)
133.2 13.0 H2O2 + Yacon (0.1%) 156.6 15.1 H2O2 + Amor Seco (0.05%)
111.5 5.2 H2O2 + Amor Seco (0.1%) 94.7 3.6 *Data shown represent
mean .+-. SEM of relative fluorescence from two independent
experiments (same experimental design run at different dates)
TABLE-US-00005 TABLE 3b Summary results of ROS inhibition* Average
ROS Inhibition (%) Test Material Average SEM Yacon (0.05%) 66.8
10.4 Yacon (0.10%) 48.7 12.7 Amor Seco (0.05%) 92.3 3.0 Amor Seco
(0.10%) 103.5 2.1 *Data shown represent mean .+-. SEM of ROS
inhibition from two independent experiments (same experimental
design run at different dates)
[0087] These results show that exposure of human keratinocytes to
Yacon leave powder, or Amor Seco leave powder, results in an
enhancement of the endogenous cellular ability to remove, degrade
or eliminate hydrogen peroxide. These results suggest that these
agents could be used topically, for skin, scalp, hair and nail, to
reduce hydrogen peroxide concentration, and therefore to be useful
in this disclosure. As previous results (Example 1 and Example 2)
showed that the dried Porphyridium biomass increased catalase
activity greater than Yacon or Amor Seco leave extracts, it is
expected that the dried Porphyridium biomass would produce superior
results in this assay too.
[0088] The topical use of either Yacon leave powder, or Amor Seco
leave powder or dried Porphyridium biomass powder, should slow,
delay and reduce the progression of hair graying, which is
initiated and enhanced by high endogenous hydrogen peroxide levels.
Similarly, the topical use of Yacon leave powder, or Amor Seco
leave powder, or dried Porphyridium biomass, should reduce the
progression and the visibility of depigmented skin lesions, the
signs of skin, scalp, hair, and nail aging, and the problems
associated with geriatric skin.
[0089] Combining the knowledge of these studies, it is expected
that the topical treatment with the natural agents of this
disclosure would deliver the hydrogen peroxide eliminating activity
of the agents themselves, and would additionally enhance the
endogenous hydrogen peroxide breakdown or elimination activity of
the keratinocytes. The effectiveness of these agents is expected at
concentrations of from about 0.001% (w/v of powdered natural) and
higher.
EXAMPLE 4
[0090] Preparation of natural extract gel formulations. Natural
extracts can be prepared as liquid samples (suspensions) or as
sample powders of the natural source that are suspended in water or
phosphate buffer or other aqueous solutions, to make e.g. 10-100
mg/mL (1-10% w/v) stock suspensions. The suspensions should be
mixed (e.g. vortexed) for e.g. 1-10 minute, and the natural
material should then be size-reduced, e.g. at 4.degree. C., to
break down the cells (e.g. by pressure disruption, jet milling,
ball milling, or sonication e.g. for 10 minutes at e.g. 30-50%
output). Larger particles should then be separated (e.g. by
centrifugation at 500-1000 rpm for 10 minutes at 4.degree. C.), and
the pellets should be discarded. The supernatants can be directly
used in the formulation, or could undergo a further size selection
(e.g. the suspension or solution can be filtered using a 0.2 micron
pore size filter). The resulting homogenized solutions of the
naturals could be directly used in the formulations, or could be
further dried (e.g. lyophilized, spray dried or freeze-dried), and
used in the formulation as dry powders.
[0091] Limited examples of some gel compositions suitable for this
invention are suggested in Tables 4. A preservative (e.g.
Phenonip.RTM., phenoxyethanol), and/or a chelating agent (e.g.
Disodium EDTA), and/or a humectant (e.g. glycerin) could be added
first to the natural extract (which is in a liquid form or a powder
suspended in liquid, e.g. water). At this step it is also possible
to further add to the natural extract mixture oil-soluble
silicones, emollients, viscosity builders or emulsifiers (e.g.
cyclomethicone, dimethicone, PolySorbate 20, Aluminum Starch Octyl
Succinate, Sucrose Cocoate, PEG-6 Capric/Caprylic Triglycerides).
It is suggested to prepare a second mixture of a thickener(s) (e.g.
Sepigel.RTM., PolyAquol 2W) along with an anti-oxidant (e.g. BHT).
The two mixtures should then be combined and mixed until
homogeneity. Other anti-oxidants (e.g. ascorbic acid, sodium
ascorbyl phosphate, lactoferrin, or tocopherol) could then added to
the combined mix and evenly mixed to form the resulting gel.
TABLE-US-00006 TABLE 4 Average % % % % % % % % standard CTFA name
W/W W/W W/W W/W W/W W/W W/W W/W ranges Natural extract 87.3 89.29
96.33 96.3 95.9 96.4 0-100 (liquid) Natural extract 1.0 5.0 0-25
(powder) Deionized water 94.8 90.9 0-100 L-methionine 0.1 0.01 0.05
0.1 0-1 Phenoxyethanol 0.75 0.75 0.75 0.75 0.75 1.0 1.0 0-5
Glycerine 2.5 2.5 0-5 Cyclomethicone 2.0 0-5 Aluminum Starch 0.75
0-5 Ocetyl Succinate Sucrose Cocoate 1.0 1.0 0-5 PEG-6 3.0 3.0 0-5
Capric/Caprylic Triglycerides Disodium EDTA 0.1 0.1 0.05 0.05 0.05
0-1 Polyacrylamine/Laureth- 2.5 2.75 2.9 2.9 3.2 3.0 0-5
7/C.sub.13-14 Isoparaffin Ascorbic Acid 0.01 0-1 Butylated 0.1 0.01
0.05 0.05 0.1 0.05 0.05 0-1 Hydroxytoluene Polysorbate 20 0.5 0-2
PolyAquol 2W 3.5 3.0 0-6
EXAMPLE 5
[0092] Preparation of natural extract oil-in-water formulations.
The natural extracts can be prepared as in example 4. Two examples
of oil-in-water emulsions are presented in Table 5. To prepare this
type of formulation, the ingredients of the lipid phase should be
combined and mixed at about 50-85.degree. C., and then cooled to
about 40-60.degree. C. In a separate vessel, the thickener can be
slowly combined with the aqueous natural extract or the powder
natural extract reconstituted in water or an aqueous solution.
After mixing for e.g. about ten minutes the rest of the aqueous
phase ingredients can be added and mixed, and then heated to about
the lowest possible temperature of the lipid phase. The two phases
can then be combined, mixed for e.g. for about ten minutes, and
cooled to room temperature. Additional active agents may be
combined into both phases or after their mixing. The biological
activity described in this disclosure should be monitored, as
excessive heat could reduce the desired activity.
TABLE-US-00007 TABLE 5 Average % % standard Phase CTFA Name W/W W/W
ranges OIL Cetearyl Glucoside 1.4 1.4 0.1-2.8 C12-15 Alkyl Benzoate
4.0 4.0 1-6 Octyl Hydroxystearate 1.0 1.0 0-5 Dimethicone 1.0 1.0
0-5 Cyclomethicone 1.0 1.0 0-5 Cetyl Alcohol 2.5 2.5 0-4 Butylated
Hydroxytoluene 0.1 0.1 .sup. 0-0.5 Octyl Methoxycinnamate 6.0 6.0
0-10 Vitamin E acetate 0.5 0.5 .sup. 0-0.5 Tocopherol Acetate 0.5
0.5 .sup. 0-0.5 AQUEOUS Glycerine 3.0 3.0 0-20 D-Pathenol 0.5 0.5
0-5 Disodium EDTA 0.1 0.1 0.01-1 Phenoxyethanol 0.7 0.3 0-1
L-methionine 0.1 0.05 0-1 Carbomer 0.35 0.3 0-3 Deionized Water
76.25 50-80 Natural extract in 77.5 0.001-90 liquid form Natural
extract in 1.0 0.001-20 powder form Other cosmetic or 0 0.25 0-10
therapeutic agents
EXAMPLE 6
[0093] Preparation of natural extract water-in-oil formulations.
The natural extracts can be prepared as in example 4. Two examples
of water-in-oil formulations are presented in Table 6. To prepare
this type of formulation the emollients (e.g. mineral oil) can be
melted. The other oil phase ingredients can then be added and the
mixture can be heated e.g. to about 75.degree. C. to enable
homogeneous mixing. The aqueous phase ingredients can be mixed
separately and should be warmed to the lowest possible temperature
of the liquid oil phase (while confirming the retaining of
biological activity of the natural extract), and then the two
mixture can be stirred until it congealed. Additional active agents
may be combined into both phases or after their mixing.
TABLE-US-00008 TABLE 6 Average % % standard Phase CTFA Name W/W W/W
ranges OIL Mineral Oil 25.0 25.0 40-80 Sorbitan Monooleate 5.0 5.0
1-6 Stearyl Alcohol 25.0 25.0 20-60 Dimethicone 1.0 1.0 1-5 Cetyl
Alcohol 2.0 2.0 0.1-10 Hydrogenated Lecithin 3.0 3.0 0-10 Parsol
MCX 3.0 3.0 0-10 Vitamin E acetate 0.5 0.5 0.01-0.5 AQUEOUS
Glycerine 3.0 3.0 0-20 Phenoxyethanol 0.7 0.7 0.01-1 Deionized
Water 30.79 20-45 Natural extract in 31.55 20-45 liquid form
Natural extract in 1.0 0 0-10 powder form L-methionine 0.01 0-1
Other active agents 0 0.25 0-1
[0094] It is understood that while the disclosure has been
described in conjunction with the detailed description thereof,
that the foregoing description is intended to illustrate and not
limit the scope of the disclosure.
* * * * *
References