U.S. patent application number 12/739835 was filed with the patent office on 2010-10-07 for head hair dyeing method.
This patent application is currently assigned to KAO Corporation. Invention is credited to Hiroyuki Fujinuma, Takeshi Iizaki, Tomohito Koshika, Takashi Matsuo, Masahiko Ogawa, Kazuhiro Okada, Hiromi Saimiya.
Application Number | 20100251488 12/739835 |
Document ID | / |
Family ID | 40579137 |
Filed Date | 2010-10-07 |
United States Patent
Application |
20100251488 |
Kind Code |
A1 |
Fujinuma; Hiroyuki ; et
al. |
October 7, 2010 |
HEAD HAIR DYEING METHOD
Abstract
There is provided a head hair dyeing method using a two-part
hair dye composition which contains a first part containing an
alkali agent, a second part containing hydrogen peroxide and a
non-aerosol type foamer container for discharging a mixture
solution of the first part and the second part as foam, the
composition containing a surfactant in at least one of the first
part and the second part, the method including discharging the
mixture solution as foam, applying the foam to the head hair, and
then re-foamed on the head hair.
Inventors: |
Fujinuma; Hiroyuki; (Tokyo,
JP) ; Matsuo; Takashi; (Tokyo, JP) ; Ogawa;
Masahiko; (Tokyo, JP) ; Iizaki; Takeshi;
(Darmstadt, DE) ; Saimiya; Hiromi; (Tokyo, JP)
; Okada; Kazuhiro; (Tokyo, JP) ; Koshika;
Tomohito; (Tokyo, JP) |
Correspondence
Address: |
OBLON, SPIVAK, MCCLELLAND MAIER & NEUSTADT, L.L.P.
1940 DUKE STREET
ALEXANDRIA
VA
22314
US
|
Assignee: |
KAO Corporation
|
Family ID: |
40579137 |
Appl. No.: |
12/739835 |
Filed: |
October 24, 2007 |
PCT Filed: |
October 24, 2007 |
PCT NO: |
PCT/JP07/01160 |
371 Date: |
April 26, 2010 |
Current U.S.
Class: |
8/405 |
Current CPC
Class: |
A61K 8/22 20130101; A61K
8/19 20130101; A61K 2800/87 20130101; A61K 8/415 20130101; A61K
8/42 20130101; A61Q 5/10 20130101; A61K 2800/88 20130101; A61Q 5/08
20130101; A61K 8/046 20130101 |
Class at
Publication: |
8/405 |
International
Class: |
A61K 8/18 20060101
A61K008/18 |
Claims
1. A head hair dyeing method using a two-part hair dye composition
which comprises a first part comprising an alkali agent, a second
part comprising hydrogen peroxide and a non-aerosol type foamer
container for discharging a mixture solution of the first part and
the second part as foam, the composition comprising a surfactant in
at least one of the first part and the second part, the method
comprising discharging the mixture solution as foam, applying the
foam to the head hair, and then re-foaming on the head hair.
2. The head hair dyeing method according to claim 1, wherein the
mixture solution applied to the head hair is foamed with
fingers.
3. The head hair dyeing method according to claim 1, wherein the
foam of the mixture solution is applied to the whole head hair and
re-foamed.
4. The head hair dyeing method according to claim 1, wherein the
foam of the mixture solution is applied to a part of the head hair
and re-foamed.
5. The head hair dyeing method according to claim 1, wherein
components (A) and (B) are present in the mixture solution of the
first part and the second part: (A) 1 to 15% by mass of a
surfactant; and (B) 0.05 to 1% by mass of a higher alcohol, wherein
the mass ratio of component (B) to component (A) (content of
component [B]/content of component [A]) is 0.02 to 0.4.
6. The head hair dyeing method according to claim 1, wherein
components (A) and (C) are present in the mixture solution of the
first part and the second part: (A) 1 to 15% by mass of a
surfactant; and (C) 0.1 to 4% by mass of a nonvolatile hydrophilic
solvent, wherein the mass ratio of component (A) to component (C)
(content of component [A]/content of component [C]) is 1 to 20.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to a head hair dyeing method
using a two-part hair dye composition.
BACKGROUND OF THE INVENTION
[0002] While liquid or creamy hair dye compositions have been
widely used so far, it is difficult to apply these compositions to
the head hair evenly. In particular, in the case of consumers
themselves applying a hair dye composition to their own head hair
at the roots or on the back of the head, they need to acquire
skills of, such as, "blocking" or using two mirrors facing each
other ("two-mirror technique"), and a careful operation is required
to apply the composition evenly.
[0003] Accordingly, discharging a composition as foam in order to
simplify the hair dyeing operation has been proposed, and hair dyes
of a two-part aerosol type and those of a one-part non-aerosol type
are known, for example. However, those of a two-part aerosol type
have such problems that uneven bleaching or uneven dyeing is likely
to occur due to an inconsistent mixing ratio of a first part and a
second part, a pressure-proof metal container or the like is
oxidized and corroded by hydrogen peroxide, and the internal
pressure of the pressure-tight container is excessively increased
by degradation of hydrogen peroxide. Furthermore, since such a
one-part non-aerosol type has no or weak bleaching ability, it is
difficult to achieve a great change in the color tone by one
procedure. Therefore, a problem arises, i.e., a hair dyeing
operation tends to be cumbersome since a hair dye is required to be
left to develop for a long time and the procedure is required to be
repeated after application.
[0004] On the other hand, discharging a two-part hair dye
composition as foam from a non-aerosol type foamer container (e.g.,
Patent Documents 1 and 2) has been proposed. By discharging a
mixture solution of a first part and a second part from a foamer
container as foam, variation in the mixing ratio hardly occurs
compared to conventional two-part aerosol hair dyes and a
sufficient bleaching or hair dyeing ability may be obtained
compared to conventional one-part non-aerosol hair dyes.
[0005] Meanwhile, all of these two-part aerosol type hair dyes,
one-part non-aerosol hair dyes and two-part non-aerosol hair dyes,
by which the hair dyes are discharged as foam from foamer
containers, still suffer a common problem, i.e., it is difficult to
adjust foam quality by which easiness of discharging from a
container and operatability on the head hair are well-balanced. To
solve this problem, for example, Patent Document 3 proposes a
composition that maintains adequate foam quality and has an
excellent foam breaking property at the time of application to the
hair. However, a careful operation is still required for even
application, and an alternative dyeing method has been needed.
[Patent Document 1] JP-A-2004-339216
[Patent Document 2] JP-A-2006-124279
[Patent Document 3] JP-A-2001-019626
SUMMARY OF THE INVENTION
[0006] The present invention provides a head hair dyeing method
using a two-part hair dye composition which contains a first part
containing an alkali agent, a second part containing hydrogen
peroxide and a non-aerosol type foamer container for discharging a
mixture solution of the first part and the second part as foam, at
least one of the first and second parts containing a surfactant,
the method including discharging the mixture solution as foam,
applying the mixture solution to the head hair, and then re-foaming
the mixture solution on the head hair.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] FIG. 1 shows a state of the two-part hair dye composition
used in the examples and the comparative examples before mixing;
and
[0008] FIG. 2 shows a state of the two-part hair dye composition
used in the examples and the comparative examples after mixing.
[0009] 1 Units of two-part hair dye composition [0010] 2 First
container [0011] 3 Second container [0012] 4 Body of Squeeze
container [0013] 5 Squeeze foamer [0014] 6 Squeeze container [0015]
A1 First part [0016] A2 Second part [0017] A3 Mixture
DETAILED DESCRIPTION OF THE INVENTION
[0018] Viscosity of a mixture solution is required to be made low
in order to form foam with a non-aerosol type foamer container.
However, depending on the property of formed foam, foam may
disappear during application or leaving out, and the mixture
solution applied to the head hair easily drips down due to the low
viscosity.
[0019] Furthermore, while it is so convenient that any skills such
as blocking and two-mirror technique are not required, however, a
high defoaming rate inhibits visualization of incomplete or uneven
application to the hair in back of the head. Therefore, uneven hair
dyeing may occur, the reason of which is different from those in
the use of liquid or creamy hair dyes.
[0020] The present invention relates to a head hair dyeing method,
by which a two-part hair dye composition, foamed by using a
non-aerosol type foamer container, does not drip down between the
applying to the head hair and the rinsing off, and incomplete or
uneven application is avoided.
[0021] The inventors of the present invention found a head hair
dyeing method that satisfy the above-described requirements, the
method including applying a two-part hair dye composition
discharged as foam on the head hair by using a non-aerosol type
foamer container and the two-part hair dye composition and
re-foaming the applied foam on the head hair thereafter.
[0022] According to the present invention, since the applied foam
is re-foamed on the head hair, foam of a two-part hair dye
composition can be rapidly and reliably spread over to the roots of
the head hair without blocking, even the hair in back of the head,
a part which is difficult to check, while avoiding incomplete or
uneven application without using mirrors. In addition, dripping can
be prevented irrespective of the foam property that may be varied
depending on the structure of a foamer container or the composition
of a two-part hair dye composition.
Head Hair Dyeing Procedures
DEFINITION
[0023] In the present invention, the head hair refers to the hair
grown on the head, and the concept thereof does not include the
hair separate from the head such as a wig and a tress. Furthermore,
the head hair may be the hair of a doll or any animal, but human
head hair is preferred.
[0024] In the head hair dyeing method of the present invention, a
two-part hair dye composition including a first part containing an
alkali agent and a second part containing hydrogen peroxide is
used, in which a surfactant is contained in at least one of the
first part and the second part. In the present invention, the
two-part hair dye composition is a concept including both a hair
dye composition that contains a dyestuff and a bleach composition
that does not contain a dye. The head hair dyeing method is a
concept including a head hair bleaching method.
[Mixture of First Part and Second Part]
[0025] A two-part hair dye composition is used for hair dyeing
treatment by mixing a first part and a second part immediately
before use. In the present invention, the first part and the second
part may be mixed by any of the following procedures:
[0026] 1) Mixing before filling in the main body of a foamer
container;
[0027] 2) Mixing in the main body of a foamer container;
[0028] 3) Mixing by joining the first part and the second part
together in a gas-liquid mixing chamber of a foamer;
[0029] 4) Once foaming the first part and the second part
separately and then mixing by joining them together before
discharging from the foamer;
[0030] 5) Mixing separately discharged foams of the first part and
the second part before applying to the head hair; or
[0031] 6) Mixing separately discharged foams of the first part and
the second part on the head hair.
[0032] Of these, the procedures of 1) mixing before filling in the
main body of the foamer container and 2) mixing in the main body of
the foamer container are preferred, from viewpoints that the
structure of the foamer container can be simplified, compositions
of the first part and the second part can be freely designed, and a
reliable uniform mixture can be obtained.
[Non-Aerosol Type Foamer Container]
[0033] In the present invention, the foamer container is a
non-aerosol type container and is used to mix a first part and a
second part or a mixture solution thereof with air and discharge
them as foam without using a propellant. Use of the foamer
container can also prevent the discharged compositions from
spattering. In particular, a non-aerosol type container can be
manufactured at low costs than an aerosol type container, the
discharging rate can be easily adjusted, the container can be
re-used by performing a certain treatment, and products can be
handled more safely during distribution since no high-pressure gas
propellant is required.
[0034] Any container may be used as the foamer container so long as
it is a non-aerosol type container having a foam discharging means
such as a known pump foamer container or squeeze foamer container
having a foam discharging means.
[0035] The pump foamer container or the squeeze foamer container
has a foam generating portion such as a net, and preferably has a
thin net, from a viewpoint that, when a mixture solution of the
first part and the second part is solidified to dryness causing
clogging, the solids can be immediately dissolved by the flow of
foam at the next discharge, resulting in resolution of clogging. In
this case, the net preferably has a 50 to 280 mesh, more preferably
a 90 to 250 mesh, and even more preferably a 130 to 220 mesh.
Creamy foam can be produced by using a net mesh in this range.
Furthermore, preferred examples of materials of such a mesh include
nylon, polyethylene, polypropylene, polyester, teflon (registered
trade name), carbon fiber, stainless, and so forth. Of these,
nylon, polyethylene, polypropylene, and polyester are more
preferred, and nylon is even more preferred.
[0036] In the foamer container used in the present invention, at
least one, preferably two or more of such nets are disposed. More
preferably, two nets are disposed from viewpoints of economic
efficiency, foam stability, and the like. In this case, a mesh
through which the solution passes first is preferably as coarse as
or coarser than a mesh through which the solution passes next.
[0037] In the foamer container, a portion in contact with the
contents (e.g., inner wall of a container, inner wall of a foam
discharging means, etc.) is preferably constituted by materials
that are not corroded by alkalis or hydrogen peroxide and are able
to pass oxygen generated by degradation of hydrogen peroxide.
[0038] As a product form of the two-part hair dye composition used
in the present invention containing a first part, a second part and
a foamer container, the first part and the second part may be
filled in respective containers separate from the foamer container,
so that both the parts should be transferred to the foamer
container and mixed before use. Alternatively, one part may be
filled in the foamer container, and the other part may be filled in
a separate container, so that the other part should be transferred
into the foamer container before use. In this case, the second part
is preferably filled in a foamer container composed of a container
having gas permeability to prevent the increase of a pressure in
the container due to oxygen generated by degradation of hydrogen
peroxide, and more preferably filled in a foamer container made of
a material having oxygen permeability (e.g., polypropylene or
polyethylene). On the other hand, a container that hardly passes
oxygen is required to be used for the first part to prevent
oxidation of an oxidative dye.
[Specific Procedures]
[0039] In the head hair dyeing method of the present invention, it
is preferable to comb the head hair in advance of application of
discharged foam. Consequently, the hair hardly gets tangled during
the re-foaming treatment, so that the hair dye composition is not
likely to splatter. Furthermore, after the head hair is combed,
blocking, generally performed in application of a hair dye
composition, is not required, and it is preferable not to perform
blocking. Consequently, the hair dye composition is easily applied
to the head hair or re-foamed as described later.
[0040] From viewpoints of even hair dyeing, prevention of dripping,
and a sufficient hair dyeing effect, it is preferable that hair
dressing is not applied to the head hair to which the hair dye
composition is to be applied immediately before the hair dyeing.
Furthermore, from viewpoints that the mixture solution is not
diluted even hair dyeing can be provided, dripping may be prevented
and a sufficient hair dyeing effect may be obtained, dry head hair
is preferred. When the hair is washed immediately before the hair
dyeing treatment, it is preferable to dry the head hair before hair
dyeing treatment. Drying the head hair means that the liquid,
mainly water, attached due to the hair wash is removed at least to
the extent that it does not drip in a spontaneous state.
Specifically, it is preferable to dry the hair with a towel or a
dryer.
[0041] The mixture solution of the first part and the second part
discharged as foam is applied to the head hair after placing it on
the hands or a brush, or directly. Here, when hands are used, it is
preferable to wear gloves. According to the dyeing method of the
present invention, since blocking generally performed in the
application of a hair dye composition is not required, the foam may
be applied in a short time. Therefore, the application of foam may
be started at any head hair site, and it is not necessary to apply
it starting with the neckline unlike conventional liquid or creamy
two-part hair dye compositions. It is sufficient to start the
application at a concerned portion, and it is preferable to apply
foam from the hairline of the head hair or a site where the hair is
parted.
[0042] It is preferable to discharge foam in about the size of a
lemon because it is the proper size to place on one hand and to
easily apply to the head hair using hands. In this case, foam is
discharged with one hand and received with the other hand. Then,
after foam received on the hand is once applied to the head hair,
foam is discharged on the hand again to repeat the application to
the head hair. This series of operations may be performed very
conveniently in a short period.
[0043] Furthermore, foam may be applied to the whole head hair or
only a specific portion.
[0044] Then, the applied foam is re-foamed on the head hair. The
foam may be re-foamed by injecting a gas, using an instrument such
as a vibrator or a brush, or with fingers. However, since the
two-part hair dye composition may be thoroughly spread to the roots
of the head hair, it is more preferable to use fingers. The rate of
foaming using a vibrator or a brush or with fingers is preferably
controlled so that the foam should not spatter.
[0045] Here, the timing of re-foaming may be after the foam has
disappeared completely, during the process of disappearance, or
before the applied foam changes. Alternatively, the timing may be
after the foam has been completely applied to the area that needs
applying the foam or during the process of application. Re-foaming
may be performed continuously once or intermittently in several
times. Here, when a vibrator, a brush, or fingers used for
re-foaming remain in contact with a part of the head hair, or they
are brought into contact within 1 second even if they are once
separated, the re-foaming is assumed as continuous. In short, it is
sufficient to observe the applied site and suitably foam at least
before liquid drips from the applied foam. Irrespective of the
property of the foam, dripping may be prevented by re-foaming the
foam that almost disappears. Furthermore, by re-foaming, foam may
be changed to the quality suitable for hair dyeing regardless of
differences in the structure of the foamer container or the
property of the foam depending on the composition of the two-part
hair dye composition. In some cases, dripping may be prevented, and
the foam quality suitable for hair dyeing may be maintained as it
is by using a specific structure of the foamer container or a
specific composition of the two-part hair dye composition. Even in
such cases, however, it is preferable to perform re-foaming at
least once as early as possible after the completion of the foam
application. By performing re-foaming at an early stage, uneven
coloring in an area that needs applying may be prevented. This
timing is preferably within 5 minutes after the completion of
application of the discharged foam to the head hair, more
preferably within 3 minutes, even more preferably within 1
minute.
[0046] Hereafter, specific examples of preferred procedures in the
processes from discharge of foam to application to the head hair
and re-foaming will be shown according to partial hair dyeing and
whole head hair dyeing.
[Partial Hair Dyeing]
[0047] 1) Discharge a suitable amount of foam on one hand, apply
the foam to a part of the head hair, and perform one operation of
re-foaming over 1 second to 10 minutes, preferably 3 seconds to 3
minutes.
[0048] 2) Discharge a suitable amount of foam on one hand, apply
the foam to a part of the head hair, perform one operation of
re-foaming over 1 second to 10 minutes, preferably 3 seconds to 3
minutes, and repeat the operation 2 to 30 times. Re-foaming is
performed over a total of 2 seconds to 20 minutes, preferably 5
seconds to 5 minutes.
[Whole Head Hair Dyeing]
[0049] 3) Discharge a suitable amount of foam on one hand, apply
the foam to a part of the head hair, and perform one operation of
re-foaming over 3 seconds to 10 minutes, preferably 5 seconds to 3
minutes. Repeat this operation to apply the foam over the whole
head.
[0050] 4) Discharge a suitable amount of foam on one hand, apply
the foam to a part of the head hair, and perform one operation of
re-foaming over 3 seconds to 10 minutes, preferably 5 seconds to 3
minutes. Repeat this operation to apply the foam over the whole
head, and then perform one operation of re-foaming over 3 seconds
to 10 minutes, preferably 5 seconds to 3 minutes. Further,
discharge a suitable amount of foam on one hand, additionally apply
the foam to a part of the head hair, and perform one operation of
re-foaming over the whole head over 3 seconds to 10 minutes,
preferably 5 seconds to 3 minutes.
[0051] 5) Discharge a suitable amount of foam on one hand, apply
the foam to a part of the head hair, and perform one operation of
re-foaming over 3 seconds to 10 minutes, preferably 5 seconds to 3
minutes. Repeat this operation to apply the foam over the whole
head. After completion of the application to the whole head,
perform one operation of re-foaming over 3 seconds to 10 minutes,
preferably 5 seconds to 5 minutes.
[0052] 6) Discharge a suitable amount of foam on one hand, apply
the foam to a part of the head hair, and perform one operation of
re-foaming over 3 seconds to 10 minutes, preferably 5 seconds to 3
minutes. Repeat this operation to apply the foam over the whole
head. After completion of the application to the whole head,
perform one operation of re-foaming over the whole head over 3
seconds to 10 minutes, preferably 5 seconds to 3 minutes, and
repeat the operation 2 to 30 times. Re-foaming is performed over a
total of 6 seconds to 20 minutes, preferably 10 seconds to 5
minutes.
[0053] 7) Discharge a suitable amount of foam on a brush, and apply
the foam to a part of the head hair. Repeat this operation to apply
the foam over the whole head, and perform one operation of
re-foaming over the whole head using the same brush over 3 seconds
to 10 minutes, preferably 5 seconds to 5 minutes.
[0054] 8) Discharge a suitable amount of foam on a brush, apply the
foam to a part of the head hair, and perform one operation of
re-foaming using the same brush or hands over 3 seconds to 10
minutes, preferably 5 seconds to 3 minutes. Repeat this operation
to apply the foam over the whole head. After completion of
application to the whole head, perform one operation of re-foaming
using the same brush or hands over 3 seconds to 10 minutes,
preferably 5 seconds to 5 minutes.
[0055] The area for re-foaming may be the whole head hair or only a
specific portion. Since foam may be thoroughly spread by performing
re-foaming over the whole head hair, incomplete dyeing may be
prevented even if application of foam is missed at a site that may
be hardly checked, such as the hair in back of the head. In partial
dyeing, when re-foaming is performed on only a specific portion,
the border of a dyed portion may be made unclear, and natural
finishing is provided. Furthermore, when re-foaming is performed,
it is very easy to visually check portions where foam has spread.
Therefore, incomplete dyeing of a portion that needs dyeing may be
avoided.
[0056] After completion of the foam application, the hair is washed
after the foam is left for about 3 to 60 minutes, preferably about
5 to 45 minutes. In the present invention, the above-mentioned time
after completion of the foam application means all the required
time from completion of application of all the foam to the whole
head or a desired portion to rinsing out, and is a concept
including time required for re-foaming in addition to the time for
simply leaving the hair. Then, the hair is suitably washed with a
shampoo or treated with a conditioner, then rinsed with water, and
dried.
[Two-Part Hair Dye Composition]
[0057] The two-part hair dye composition used in the present
invention contains an alkali agent in a first part, hydrogen
peroxide in a second part, and (A) a surfactant in at least one of
the first part and the second part. Further, (B) a higher alcohol
or (C) a nonvolatile hydrophilic solvent is preferably contained in
the mixture solution of the first part and the second part.
[Alkali Agent]
[0058] Examples of the alkali agent contained in the first part
include ammonia, alkanolamine such as ethanolamine, sodium
hydroxide, and potassium hydroxide. Furthermore, ammonium salt such
as ammonium hydrogen carbonate and ammonium chloride, carbonate
such as potassium carbonate and sodium hydrogencarbonate, and the
like may be suitably added as buffer.
[0059] pH of the mixture solution of the first part and the second
part in the two-part hair dye composition used in the present
invention is preferably 8 to 11, more preferably 9 to 11, and the
amount of the alkali agent used is suitably adjusted so that the
mixture solution should have the above-mentioned pH.
[Hydrogen Peroxide]
[0060] The content of hydrogen peroxide in the second part is
preferably 1 to 9% by mass, more preferably 3 to 6% by mass. The
content of hydrogen peroxide in the mixture solution of the first
part and the second part is preferably 1 to 6% by mass, more
preferably 2 to 5% by mass. Further, the pH of the second part is
preferably 2 to 6, more preferably pH 2.5 to 4, to prevent
degradation of hydrogen peroxide.
[(A): Surfactant]
[0061] A surfactant is added to either the first part or the second
part, or both parts, so that foam should be easily formed by mixing
the mixture solution of the two-part hair dye with air by a foam
discharging means of a foamer container, and that the foam should
be stable. An anionic surfactant and/or a nonionic surfactant is
preferably used so that favorable foam that is readily applied to
the head hair can be provided even when a solution temperature is
low or close to ordinary temperature.
[0062] Examples of the anionic surfactant include, such as, a
sulfuric acid ester type, sulfonic acid type, carboxylic acid type
and phosphate ester type anionic surfactants. Preferred examples
thereof include alkylsulfate and polyoxyalkylene alkylsulfate of
the sulfuric acid ester type, with an alkyl group having 10 to 24
carbon atoms, more preferably 12 to 18 carbon atoms. Furthermore,
this alkyl group is preferably linear. Furthermore, of the
polyoxyalkylene alkylsulfate, polyoxyethylene alkylsulfate is more
preferred. Of these, those with an oxyethylene group having an
average number of additional moles of 1 to 10, more preferably 2 to
5 are preferred.
[0063] Examples of the nonionic surfactant include polyoxyalkylene
alkyl ether, polyoxyalkylene alkenyl ether, polyoxyalkylene fatty
acid ester, alkylglyceryl ether, polyglycerine fatty acid ester,
fatty acid alkanol amide, sugar ether type, sugar ester type, and
sugar amide type. Preferred examples thereof include alkyl
polyglycoside, polyoxyalkylene alkyl ether and alkylglyceryl
ethers. Alkyl polyglycoside preferably include an alkyl group
having 8 to 18 carbon atoms, more preferably 8 to 14, even more
preferably 9 to 11, and this alkyl group is preferably linear. The
average degree of polymerization of a glucoside is preferably 1 to
5, more preferably 1 to 2. Polyoxyalkylene alkyl ether is
preferably an ether having an alkyl group having 10 to 22 carbon
atoms, more preferably 12 to 18, and this alkyl group is preferably
linear. Furthermore, polyoxyethylene alkyl ethers are more
preferred, and of these, the average added number of oxyethylene
group is 1 to 40, more preferably 4 to 30. Alkylglyceryl ethers
preferably include an alkyl group having 8 to 18 carbon atoms, more
preferably 8 to 12, and this alkyl group is preferably
branched.
[0064] Two or more types of component (A) may be used in
combination, and the content thereof in the mixture solution of the
first part and the second part is preferably 1 to 15% by mass, more
preferably 2 to 10% by mass, even more preferably 2.5 to 7% by
mass, even more preferably 3 to 5% by mass.
[0065] Furthermore, to improve the discharged foam quality at a low
solution temperature and prevent dripping, it is preferable to use
an anionic surfactant and a nonionic surfactant in combination, and
the mass ratio of the anionic surfactant to the nonionic surfactant
in the mixture solution (content of anionic surfactant/content of
nonionic surfactant) is preferably 0.01 to 1, more preferably 0.1
to 0.5.
[0066] When the two-part hair dye composition used in the present
invention is used for dyeing of the head hair, an oxidative dye or
a direct dye is added to the first part. To solubilize these dyes,
it is preferable to mainly use nonionic surfactant as surfactant
added to the first part, taking into account the high ionic
strength of ammonia and carbonates contained in the first part. On
the other hand, anionic surfactants are preferably added to the
second part due to the high ionic strength of the first part.
[(B): Higher Alcohol]
[0067] The higher alcohol as component (B) is used to allow foam to
be maintained longer and to improve the effect of preventing
dripping during the foam being left to develop after application of
a two-part hair dye composition to the head hair. Higher alcohols
preferably include an alkyl or alkenyl group having 10 to 30 carbon
atoms, more preferably 12 to 24 carbon atoms, even more preferably
14 to 22. Of these, those including an alkyl group, more preferably
a linear alkyl group are preferred. Examples of the higher alcohol
as component (B) include myristyl alcohol, cetanol, stearyl
alcohol, behenyl alcohol, isostearyl alcohol, and oleyl alcohol.
Two or more thereof may be used in combination.
[0068] Two or more types of component (B) may be used in
combination, and may be added to either the first part or the
second part or both parts. The content of component (B) in the
mixture solution of the first part and the second part is
preferably 0.05 to 1% by mass, more preferably 0.1 to 0.8% by mass,
even more preferably 0.2 to 0.6% by mass, even more preferably 0.3
to 0.4% by mass from viewpoints that foaming property is not
deteriorated at a low solution temperature, and that the effect of
preventing dripping during the foam being left to develop is
improved.
[0069] In the present invention, the mass ratio of component (B) to
component (A) in the mixture solution (content of component
[B]/content of component [A]) is preferably 0.02 to 0.4, preferably
0.03 to 0.3, more preferably 0.05 to 0.2 to improve the foam
quality at a low solution temperature and prevent dripping.
[(C): Nonvolatile Hydrophilic Solvent]
[0070] Furthermore, it is preferable to add (C) a nonvolatile
hydrophilic solvent to the first part or the second part.
Consequently, irritation on the scalp may be reduced which occurs
because water is evaporated from the two-part hair dye composition
while leaving to develop after application of the two-part hair dye
composition to the head hair, and therefore irritating components
such as hydrogen peroxide are concentrated. Preferred examples of
the nonvolatile hydrophilic solvent include substances without a
defoaming action such as polyols and lower alkyl ethers (having 1
to 4 carbon atoms) derived therefrom. Polyols having 2 to 6 carbon
atoms are preferred, and examples thereof include glycerin,
diglycerin, propylene glycol, dipropylene glycol, 1,3-butane diol,
ethylene glycol, diethylene glycol, isoprene glycol, and sorbitol.
Examples of lower alkyl ether derived from polyol include
mono-lower alkyl ethers and poly-lower alkyl ethers derived from
the above-mentioned polyols (e.g., di-lower alkyl ether). Of these,
mono-methyl ether and mono-ethyl ether derived from polyols are
preferred, and specific examples thereof include ethylene glycol
mono-methyl ether, ethylene glycol mono-ethyl ether, diethylene
glycol mono-methyl ether, and diethylene glycol mono-ethyl ether.
Two or more thereof may be used in combination.
[0071] The content of the nonvolatile hydrophilic solvent in the
mixture solution of the first part and the second part is
preferably 0.1 to 4% by mass, more preferably 0.5 to 3% by mass,
even more preferably 1 to 2% by mass, from viewpoints that
irritation of the scalp is reduced, and that favorable foam quality
is maintained even at a low solution temperature.
[0072] Not to cause irritation to the scalp even when the content
of the nonvolatile hydrophilic solvent is reduced and to maintain a
hair dyeing ability and a bleaching ability, the mass ratio of
component (A) to component (C) (content of component [A]/content of
component [C]) is preferably 1 to 20, more preferably 1 to 10, even
more preferably 1.5 to 5, even more preferably 2 to 4.
[(D): Polyquaternium-7]
[0073] Polyquaternium-7 as component (D) may be further added to
the two-part hair dye composition used in the present invention to
improve the effect of preventing dripping. As component (D),
commercially available products such as, for example, Merquat 550
(Nalco) may be used.
[0074] The content of component (D) in the mixture solution of the
first part and the second part is preferably 0.01 to 3% by mass,
more preferably 0.1 to 1% by mass, even more preferably 0.2 to 0.5%
by mass to realize favorable foam that is easily applied to the
head hair even when the solution temperature is low or close to
ordinary temperature, and to obtain an effect of preventing the
mixture solution from dripping down between the time of application
to the hair and the time of rinsing out.
[(E): Polyquaternium-22]
[0075] Polyquaternium-22 as component (E) may be further added to
the two-part hair dye composition used in the present invention to
control the defoaming property after application to the hair,
maintain adequate residual foam, and easily check applied sites. As
component (E), commercially available products such as, for
example, Merquat 280 and Merquat 295 (both produced by Nalco) may
be used.
[0076] The content of component (E) in the mixture solution of the
first part and the second part is preferably 0.01 to 0.5% by mass,
more preferably 0.1 to 0.2% by mass to obtain the above-described
effects without deteriorating the foaming property at a low
solution temperature.
[Dyes]
[0077] The two-part hair dye composition of the present invention
may be used for bleaching of the head hair when a dye is not added
to the mixture solution of the first part and the second part, and
also may be used for hair dyeing by adding an oxidative dye or a
direct dye. When the composition is used for hair dyeing, the first
part contains an oxidative dye and/or a direct dye. Examples of the
oxidative dye include dye precursors such as p-phenylenediamine,
toluene-2,5-diamine, o-chlor-p-phenylenediamine,
N-phenyl-p-phenylenediamine,
N,N-bis(hydroxyethyl)-p-phenylenediamine, 3-methyl-4-aminophenol,
2-hydroxyethyl-p-phenylenediamine, p-aminophenol,
p-methylaminophenol, 4-amino-m-cresol, o-aminophenol,
1-hydroxyethyl-4,5-diaminopyrazole, and salts thereof; and couplers
such as resorcin, 2-methylresorcin, 1-naphthol,
1,5-dihydroxynaphthalene, 5-amino-o-cresol, m-phenylenediamine,
m-aminophenol, 2,4-diaminophenoxyethanol, 2,6-diaminopyridine,
2-methyl-5-hydroxyethylaminophenol, 2-amino-3-hydroxypyridine, and
salts thereof.
[0078] Examples of the direct dye include basic dyes, nitro dyes,
dispersive dyes, and cationic dyes. More specific examples thereof
include 2-nitro-p-phenylenediamine, 2-amino-6-chloro-4-nitrophenol,
3-nitro-p-hydroxyethylaminophenol, 4-nitro-o-phenylenediamine,
4-amino-3-nitrophenol, 4-hydroxypropylamino-3-nitrophenol, HC Blue
2, HC Orange 1, HC Red 1, HC Yellow 2, HC Yellow 4, HC Yellow 5, HC
Red 3, N,N-bis(2-hydroxyethyl)-2-nitro-p-phenylenediamine,
Dispersive Purple 1, Dispersive Blue 1, Dispersive Black 9, Basic
Blue 99, Basic Brown 16, Basic Brown 17, Basic Red 76, Basic Yellow
76, Basic Orange 31, Basic Red 51, and so forth.
[Silicones]
[0079] It is preferable that silicone is not added to the mixture
solution of the first part and the second part in the two-part hair
dye composition used in the present invention from a viewpoint that
discharged foam may be maintained for a long time, however,
silicone may be added to a certain extent to work the foam into the
head hair smoothly and exert a high conditioning effect on the head
hair. Examples of the silicones include dimethylpolysiloxane,
methylphenylpolysiloxane, polyether-modified silicone,
amino-modified silicone, and oxazoline-modified silicone elastomer,
and emulsion obtained by dispersing these silicones in water using
surfactants. Of these, polyether-modified silicone, amino-modified
silicone, and emulsion thereof are preferred, from a viewpoint that
a stable dispersion in water is enabled without using a thickening
agent.
[0080] When silicones are used for the above-described purpose, the
content of the silicones in the mixture solution of the first part
and the second part is preferably 0.01 to 0.5% by mass, more
preferably 0.02 to 0.4% by mass, even more preferably 0.05 to 0.3%
by mass.
[Other Components]
[0081] In addition, depending on the purposes, fragrance,
ultraviolet absorber, metal sequestering agent such as edetic acid,
disinfectant, preservative such as methyl paraoxybenzoate,
stabilizer such as fenasetin, etidronic acid, and oxyquinoline
sulfate, organic solvent such as ethanol, benzyl alcohol, and
benzyloxyethanol, water-soluble polymer such as Polyquaternium-6,
Polyquaternium-39, and hydroxyethylcellulose, moisturizing agent
and the like may be added to the first part and the second part.
Furthermore, using water as the main medium in the mixture solution
of the first part and second part is preferable.
[Viscosity]
[0082] The viscosity of the first part (25.degree. C.) is
preferably 1 to 50 mPas, more preferably 3 to 40 mPas, even more
preferably 5 to 30 mPas. The viscosity of the second part
(25.degree. C.) is preferably 1 to 300 mPas, more preferably 3 to
200 mPas, even more preferably 5 to 100 mPas. The viscosity of the
mixture solution of the first part and the second part (25.degree.
C.) is 1 to 100 mPas, preferably 3 to 50 mPas, more preferably 5 to
30 mPas. The value of viscosity is defined as a value obtained
after rotating Rotor No. 1 of Type B Rotational Viscometer (model
TV-10) produced by Tokimec Inc. for 1 minute. Measurement is
performed at 60 rpm for 100 mPas or lower, 30 rpm for 100 to 200
mPas, and 12 rpm for 200 to 500 mPas. By adjusting the viscosity of
the mixture solution within the above-mentioned range, the mixture
solution may be mixed uniformly without foaming and easily applied
to the head hair, foam is well worked into the head hair, and
uniform foam that hardly drips after application to the head hair
may be obtained.
[0083] By adjusting the viscosity within the above-mentioned range,
quality of foam that may be easily applied to and worked into the
head hair may bebe provided, foam may be prevented from dripping
down after application to the head hair, and foam may be easily
discharged using a non-aerosol type foamer. In order to adjust
viscosity to fall within the above-mentioned range, water-soluble
solvents such as ethanol may be added, or contents and types of
surfactant, polyols, higher alcohol, and the like may be suitably
adjusted.
[Gas-Liquid Mixing Ratio]
[0084] The gas-liquid mixing ratio of air as foam discharged using
a foamer container to the mixture solution is preferably 10 to 50
mL/g, more preferably 15 to 40 mL/g, even more preferably 20 to 30
mL/g, from viewpoints that the compositions may be easily applied
to and worked into the head hair. It is noted that the gas-liquid
mixing ratio here is a value measured as follows.
[0085] The gas-liquid mixing ratio is determined by measuring the
mass and the volume of foam discharged at 25.degree. C. are
measured. 100 g of the mixture solution is placed in a foamer
container, 20 g of foam is discharged into a 1000 mL measuring
cylinder, the volume of the foam is measured at 1 minute after the
start of discharge. The gas-liquid mixing ratio (mL/g) is obtained
by dividing the volume (mL) of this discharged foam by 20 g, the
mass thereof.
EXAMPLES
Example 1, Comparative Example 1
[0086] A first part and a second part of a two-part hair dyeing
composition having the composition shown in Table 1 were prepared.
As shown in FIG. 1, 40 g of a first part (A1) was filled in a first
container (2) and 60 g of a second part (A2) in a second container
(3) (which also serves as a squeeze container main body (4);
internal volume, 210 mL). Further, a squeeze foamer (5) (S1 Squeeze
Foamer produced by Daiwa Can Company) was also prepared.
TABLE-US-00001 TABLE 1 Content in first part First part (% by mass)
Para-aminophenol 0.8 Meta-aminophenol 0.2 Toluene-2,5-diamine 0.5
Resorcin 0.6 Aqueous ammonia (25% by mass) 8.5 Ammonium hydrogen
carbonate 8.0 Decylglucoside 3.2 Laureth-23 2.0 Propylene glycol
4.0 Polyquaternium-22 0.4 Methylparaben 0.1 EDTA-4Na 0.5 Fragrance
0.3 Ascorbic acid 0.4 Anhydrous sodium sulfite Balance Water
Content in second part Second part (% by mass) Sodium laureth
sulfate 1.9 Lauramide propyl betaine 0.05 Lauryl hydroxysultaine
0.05 Lauric acid 0.04 Cetanol 1.5 Etidronic acid 0.04 Phosphoric
acid (75% by mass) Amount required to adjust pH to 3.8 Sodium
hydroxide solution (48% by 0.01 mass) Oxyquinoline sulfate 0.04
Glycerine 5.0 Aqueous hydrogen peroxide (35% by 16.3 mass) Water
Balance
[0087] Subjects (Japanese females with a gray hair percentage of
30%: the hair was cut at a length aligned to the jaw line) received
the above-mentioned filled first part and second part and the
squeeze foamer, and performed hair dyeing by the following
procedure. The applied hair dye was compared between when an
operation of re-foaming on the head hair was performed (Example 1)
and when this operation was not performed (Comparative Example 1)
in a half-head study. Evaluation results are shown later.
Hair Dyeing Procedure
[0088] 1.40 g of a first part was placed in a container main body
(4) of a squeeze container containing 60 g of a second part and
mixed, so that the mixture solution of the first part and the
second part should not foam, then a squeeze foamer (5) was mounted
(FIG. 2).
[0089] 2. Gloves were put on, the squeeze container was squeezed
with one hand in an upright position, and the mixture solution as
foam was discharged on the other hand.
[0090] 3. The mixture solution as foam was applied to the dry head
hair.
[0091] 4. The operations at steps 2 and 3 were repeated, and the
total volume (100 g) of the mixture solution was applied to the
whole head hair so as to be evenly distributed between the right
and left sides.
[0092] 5. The mixture solution applied on the right half of the
head hair was re-foamed by rubbing the roots of the head hair with
fingers, so that the right half of the head hair should be covered
with the foam (Example 1). The left half of the head hair was left
as it was
Comparative Example 1
[0093] 6. The mixture was left for 30 minutes after completion of
the re-foam operation on the right half of the head hair.
[0094] 7. The whole head hair was rinsed with warm water,
shampooed, treated with a conditioner, and dried successively.
Evaluation Results
(1) Dripping of Mixture Solution
[0095] Example 1: No dripping was observed during the 30 minutes
from the start of leaving at step 6.
[0096] Comparative Example 1: Dripping occurred at the neckline at
10 minutes after the start of leaving at step 6. Thereafter,
dripping also occurred around the forehead and ears.
(2) Uneven Dyeing
[0097] Example 1: The hair was evenly dyed both on the surface and
at the roots.
[0098] Comparative Example 1: Although the Hair on the surface was
evenly dyed, the hair at the roots on the back of the head was not
dyed at some sites. This appeared to be because application of the
mixture solution was incomplete.
Example 2
[0099] A first part and a second part of a two-part hair dyeing
composition having the composition shown in Table 2 were prepared.
These parts were filled in the same containers as in Example 1.
Further, the same squeeze foamer as in Example 1 was prepared.
TABLE-US-00002 TABLE 2 Content of first part First part (% by mass)
Toluene-2,5-diamine 0.14 Para-aminophenol 0.1 Meta-aminophenol 0.05
Para-amino-ortho-cresol 0.1 2,4-Diaminophenoxyethanol 0.15
hydrochloride Aqueous ammonia (28% by mass) 6.0 Ammonium hydrogen
carbonate 10.5 Decylglucoside 6.5 Trideceth-9 0.6 Laureth-23 1.8
Myristyl alcohol 0.2 Propylene glycol 4.0 Ethanol 9.0
Polyquaternium-7 0.6 Polyquaternium-22 0.4 EDTA-4Na 0.1 Ascorbic
acid 0.3 Anhydrous sodium sulfite 0.4 Fragrance 0.5 Water Balance
Content in second part Second part (% by mass) Sodium laureth
sulfate 1.9 Lauramide propyl betaine 0.05 Lauryl hydroxysultaine
0.05 Lauric acid 0.04 Cetanol 1.5 Etidronic acid 0.04 Phosphoric
acid (75% by mass) Amount required to adjust pH to 3.8 Sodium
hydroxide solution (48% by 0.01 mass) Oxyquinoline sulfate 0.04
Glycerine 5.0 Aqueous hydrogen peroxide (35% by 16.3 mass) Water
Balance
[0100] Subjects (Japanese females with a gray hair percentage of
30%: the hair was cut at a length aligned to the jaw line) received
the above-mentioned filled first part and second part, and the
squeeze foamer hair dyeing was performed by the same procedure as
in Example 1, and the hair dye was evaluated for dripping and
uneven dyeing.
Evaluation Results
(1) Dripping of Mixture Solution
[0101] No dripping was observed during the 30 minutes from the
start of leaving at step 6.
(2) Uneven Dyeing
[0102] The hair was evenly dyed both on the surface and at the
roots.
Examples 3 to 7
[0103] A first part and a second part having the composition (% by
mass) shown in Table 3 were prepared. As shown in FIG. 1, 40 g of a
first part (A1) was filled in a first container (2), and 60 g of a
second part (A2) in a second container (3) (which also serves as a
squeeze container main body (4); internal volume, 210 mL). These
containers were left in a refrigerator maintained at 5.degree. C.
together with a squeeze foamer (5) (S1 Squeeze Foamer produced by
Daiwa Can Company) for 24 hours.
[0104] Immediately after these containers were removed from the
refrigerator in a room at 20.degree. C., the first part and the
second part were mixed, and a squeeze foamer was mounted on the
container, which was given to subjects (Japanese 20's-age females
with black hair at a medium length). Subjects were asked to squeeze
the container with one hand several times in upright position it
and discharge 20 g of the mixture solution into a 1000 mL measuring
cylinder. The total volume (mL) of liquid and foam at 1 minute from
the start of the discharge was measured. A gas-liquid mixing ratio
(mL/g) was obtained by dividing this volume by 20 g, and the
quality of foam discharged at a low temperature was evaluated as
follows. The results are shown in the columns below the composition
in Table 3.
Quality of Foam Discharged at a Low Temperature (Evaluation by
Gas-Liquid Mixing Ratio)
[0105] A: 20 mL/g or more and less than 30 mL/g; B: 15 mL/g or more
and less than 20 mL/g, or 30 mL/g or more and less than 40 mL/g; C:
10 mL/g or more and less than 15 mL/g, or 40 mL/g or more and less
than 50 mL/g; D: less than 10 mL/g, or 50 mL/g or more.
[0106] It is noted that these evaluation criteria were established
from viewpoints of the volume placed on the hand and the bath ratio
at the time of application to the hair.
[0107] Further, when 75 g of the mixture solution was used, and
subjects dyed their own head hair by the following procedure, the
mixture solution was spread all over the head hair, no dripping was
observed, and a uniform hair dyeing result was obtained without
uneven dyeing.
"Hair Dyeing Procedure"
[0108] 1. Gloves were put on, the squeeze container was squeezed
with one hand in an upright position, and the mixture solution as
foam discharged on the other hand.
[0109] 2. The mixture solution as foam was applied to the dry head
hair.
[0110] 3. The operations at steps 1 and 2 were repeated, and 75 g
of the mixture solution was applied to the whole head hair.
[0111] 4. The applied mixture solution was re-foamed by rubbing the
whole head hair with fingers for 20 seconds.
[0112] 5. The mixture was left for 10 minutes.
[0113] 6. The applied mixture solution was re-foamed by rubbing the
whole head hair with fingers for 30 seconds.
[0114] 7. The mixture was left for 20 minutes after completion of
the re-foam operation at step 6.
[0115] 8. The whole head hair was rinsed with warm water,
shampooed, treated with a conditioner, and dried successively.
TABLE-US-00003 TABLE 3 Example (% by mass) 3 4 5 6 7 First part
Para-aminophenol 0.15 0.15 0.15 0.15 0.15 Para-amino-ortho-cresol
0.2 0.2 0.2 0.2 0.2 Toluene-2,5-diamine 0.1 0.1 0.1 0.1 0.1 Aqueous
ammonia (28% by mass) 6.0 6.0 6.0 6.0 6.0 Ammonium hydrogen
carbonate 10.0 10.0 10.0 10.0 10.0 Decylglucoside 8.5 5.1 18.7 8.5
8.5 Propylene glycol 4.0 4.0 4.0 4.0 4.0 EDTA-4Na 0.1 0.1 0.1 0.1
0.1 Ascorbic acid 0.4 0.4 0.4 0.4 0.4 Anhydrous sodium sulfite 0.5
0.5 0.5 0.5 0.5 Water Balance Balance Balance Balance Balance
Second part Aqueous hydrogen peroxide (35% 16.3 16.3 16.3 16.3 16.3
by mass) Sodium laureth sulfate 1.0 0.6 2.2 1.0 1.0 Cetanol 0.6 0.6
0.6 0.2 1.5 Oxyquinoline sulfate 0.03 0.03 0.03 0.03 0.03 Etidronic
acid 0.08 0.08 0.08 0.08 0.08 Sodium hydroxide * * * * * Water
Balance Balance Balance Balance Balance Viscosity of mixture
solution 3 3 3 2 28 (first part:second part = 1:1.5) (5.degree. C.,
mPa s) (A) Surfactant in mixture 4.0 2.4 8.8 4.0 4.0 solution (% by
mass) (B) Higher alcohol in mixture 0.36 0.36 0.36 0.12 0.9
solution (% by mass) (B)/(A) 0.09 0.15 0.04 0.03 0.23 Evaluation
Quality of foam A A A A A discharged at low temperature Gas-liquid
mixing 22 20 20 25 18 ratio (mL/g * Amount required to adjust
second part to pH 3.5
Examples 8 to 15
[0116] First parts and second parts having the compositions (% by
mass) shown in Tables 4 to 6 were prepared. As shown in FIG. 1, 40
g of a first part (A1) was filled in a first container (2), and 60
g of a second part (A2) in a second container (3) (which also
serves as a squeeze container main body (4); internal volume, 210
mL). Further, a squeeze foamer (5) (S1 Squeeze Foamer produced by
Daiwa Can Company) was prepared.
[0117] When subjects (Japanese 20's-age females with black hair at
a medium length) received the filled first part and second part and
the squeeze foamer and performed hair dyeing by the following
procedure, the mixture solution was spread all over the head hair,
no dripping was observed, and a uniform hair dyeing result was
obtained without uneven dyeing.
[0118] Further, "irritation of scalp" during the hair dyeing was
evaluated by subjects according to the following criteria. The
results are shown in the columns below the composition in Table
4.
Irritation of Scalp
[0119] A: Feeling no irritation B: Feeling little irritation C:
Feeling slight, but not unbearable, irritation D: Feeling distinct
irritation
Hair Dyeing Procedure
[0120] 1.40 g of a first part was placed in a container main body
(4) of a squeeze container containing 60 g of a second part and
mixed, so that the mixture solution of the first part and the
second part should not foam, then a squeeze foamer (5) was mounted
(FIG. 2).
[0121] 2. Gloves were put on, the squeeze container was squeezed
with one hand in an upright position, and the mixture solution as
foam was discharged on the other hand.
[0122] 3. The mixture solution as foam was applied to the dry head
hair.
[0123] 4. The operations at steps 1 and 2 were repeated, and 80 g
of the mixture solution was applied to the whole head hair.
[0124] 5. The applied mixture solution was re-foamed by rubbing the
whole head hair with fingers for 15 seconds.
[0125] 6. The mixture was left for 10 minutes as it was.
[0126] 7. The applied mixture solution was re-foamed by rubbing the
whole head hair with fingers for 25 seconds.
[0127] 8. The mixture was left for 20 minutes after completion of
the re-foam operation at step 7.
[0128] 9. The whole head hair was rinsed with warm water,
shampooed, treated with a conditioner, and dried successively.
TABLE-US-00004 TABLE 4 Example (% by mass) 8 9 10 First part
Para-aminophenol 0.15 0.15 0.15 Para-amino-ortho-cresol 0.2 0.2 0.2
Toluene-2,5-diamine 0.1 0.1 0.1 Aqueous ammonia (28% by mass) 6.0
6.0 6.0 Ammonium hydrogen carbonate 10.0 10.0 10.0 Decylglucoside
6.0 6.0 9.0 Laureth-23 2.0 2.0 3.0 Propylene glycol 5.0 5.0 4.0
Polyquaternium-7 0.5 0.5 0.5 EDTA-4Na 0.1 0.1 0.1 Ascorbic acid 0.4
0.4 0.4 Anhydrous sodium sulfite 0.5 0.5 0.5 Fragrance 0.5 0.5 0.5
Water Balance Balance Balance Second part Aqueous hydrogen peroxide
(35% 16.3 16.3 16.3 by mass) Sodium laureth sulfate 2.0 3.0 4.0
Lauric acid 0.01 0.01 0.01 Glycerine 0 2.0 0 Etidronic acid 0.08
0.08 0.08 Sodium hydroxide * * * Water Balance Balance Balance
Mixing ratio of first part and second part = 1:1.5 (mass ratio) (A)
Surfactant in mixture 4.4 5 7.2 solution (% by mass) (C)
Nonvolatile hydrophilic 2 3.2 1.6 solvent in mixture solution (% by
mass) (A)/(C) 2.2 1.6 4.5 Evaluation Irritation of scalp B B B *
Amount required to adjust second part to pH 3.5
TABLE-US-00005 TABLE 5 Example (% by mass) 11 12 First part
Toluene-2,5-diamine 0.3 0.3 Meta-aminophenol 0.25 0.25
2,4-Diaminophenoxyethanol 0.05 0.05 hydrochloride Aqueous ammonia
(28% by mass) 5.0 5.0 Ammonium hydrogen carbonate 10.0 10.0
Decylglucoside 6.0 8.0 Laureth-23 2.0 2.5 Propylene glycol 4.0 3.5
Ethanol 7.0 7.0 Polyquaternium-7 0.6 0.6 Polyquaternium-22 0.4 0.4
EDTA-4Na 0.1 0.1 Ascorbic acid 0.4 0.4 Anhydrous sodium sulfite 0.5
0.5 Fragrance 0.5 0.5 Water Balance Balance Second part Aqueous
hydrogen peroxide (35% 16.3 16.3 by mass) Sodium laureth sulfate
0.8 1.8 Lauramide propyl betaine 0.03 0.08 Lauryl hydroxysultaine
0.02 0.08 Octoxyglycerine 0.05 0.05 Cetanol 0.5 0.5 Stearyl alcohol
0.2 0.2 Lauric acid 0.02 0.02 Etidronic acid 0.08 0.08 Sodium
hydroxide * * Water Balance Balance Mixing ratio of first part and
second part = 1:1.5 (mass ratio) (A) Surfactant in mixture 3.74
5.406 solution (% by mass) (C) Nonvolatile hydrophilic 1.6 1.4
solvent in mixture solution (% by mass) (A)/(C) 2.3 3.9 Evaluation
Irritation of scalp A A * Amount required to adjust second part to
pH 3.5
TABLE-US-00006 TABLE 6 Example (% by mass) 13 14 15 First part
Toluene-2,5-diamine 1.6 1.6 1.6 Meta-aminophenol 0.2 0.2 0.2
Resorcin 1.0 1.0 1.0 2,4-Diaminophenoxyethanol 0.5 0.5 0.5
hydrochloride Aqueous ammonia (28% by mass) 3.0 3.0 3.0 Ammonium
hydrogen carbonate 2.5 2.5 2.5 Decylglucoside 8.0 8.0 8.0
Trideceth-9 1.0 1.0 1.0 Laureth-23 2.0 2.0 2.0 Sodium laureth
sulfate 1.5 1.5 1.5 Lauramide propyl betaine 0.01 0.01 0.35
Myristyl alcohol 0.1 0.1 0.1 Propylene glycol 1.0 2.0 10.0 Ethanol
10.0 10.0 5.0 Polyquaternium-7 0.6 0.6 0.6 Polyquaternium-22 0.4
0.4 0.4 EDTA-4Na 0.1 0.1 0.1 Ascorbic acid 0.3 0.3 0.3 Anhydrous
sodium sulfite 0.4 0.4 0.4 Fragrance 0.5 0.5 0.5 Water Balance
Balance Balance Second part (common) Aqueous hydrogen peroxide (35%
16.3 16.3 16.3 by mass) Sodium laureth sulfate 2.5 2.5 0.4
Octoxyglycerine 0.1 0.1 0.1 Lauryl hydroxysultaine 0.01 0.01 0.1
Cetanol 0.35 0.35 0.35 Stearyl alcohol 0.15 0.15 0.15 Oxyquinoline
sulfate 0.04 0.04 0.04 Etidronic acid 0.08 0.08 0.08 Sodium
hydroxide * * * Water Balance Balance Balance Mixing ratio of first
part and second part = 1:1.5 (mass ratio) (A) Surfactant in mixture
6.57 5.67 5.5 solution (% by mass) (C) Nonvolatile hydrophilic 0.4
0.8 4.0 solvent in mixture solution (% by mass) (A)/(C) 16.4 8.2
1.4 Evaluation Irritation of scalp B B A * Amount required to
adjust second part to pH 3.5
* * * * *