U.S. patent application number 10/837643 was filed with the patent office on 2004-12-02 for cosmetic composition comprising at least one film-forming polymer and at least one regulator.
This patent application is currently assigned to L'OREAL, S.A.. Invention is credited to Dupuis, Christine, Samain, Henri.
Application Number | 20040241125 10/837643 |
Document ID | / |
Family ID | 9552326 |
Filed Date | 2004-12-02 |
United States Patent
Application |
20040241125 |
Kind Code |
A1 |
Samain, Henri ; et
al. |
December 2, 2004 |
Cosmetic composition comprising at least one film-forming polymer
and at least one regulator
Abstract
The invention concerns a cosmetic composition comprising, in a
cosmetically acceptable medium, at least a film-forming polymer (A)
with particular characteristics and at least an additive (B), the
latter being selected such that the film formed on the hair after
the cosmetic composition has been applied retains its mechanical
properties whatever the hygrometric conditions. The invention also
concerns a hair care or hair styling method using said composition
and its use for the formulation of cosmetic products such as
lacquers, sprays or foams, for hair care or hair styling.
Inventors: |
Samain, Henri; (Bievres,
FR) ; Dupuis, Christine; (Paris, FR) |
Correspondence
Address: |
FINNEGAN, HENDERSON, FARABOW, GARRETT & DUNNER
LLP
1300 I STREET, NW
WASHINGTON
DC
20005
US
|
Assignee: |
L'OREAL, S.A.
|
Family ID: |
9552326 |
Appl. No.: |
10/837643 |
Filed: |
May 4, 2004 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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10837643 |
May 4, 2004 |
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09889505 |
Oct 12, 2001 |
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6749837 |
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09889505 |
Oct 12, 2001 |
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PCT/FR00/03148 |
Nov 10, 2000 |
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Current U.S.
Class: |
424/70.12 |
Current CPC
Class: |
A61K 8/87 20130101; A61K
8/894 20130101; Y10S 424/02 20130101; Y10S 514/945 20130101; Y10S
424/01 20130101; A61K 8/8147 20130101; A61Q 5/06 20130101 |
Class at
Publication: |
424/070.12 |
International
Class: |
A61K 007/06; A61K
007/11 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 19, 1999 |
FR |
99/14596 |
Claims
1-14. (Canceled)
15. A cosmetic composition comprising: (1) at least one
film-forming polymer (A), wherein a film obtained by drying a
mixture of said at least one film-forming polymer (A) with ethanol
or water, under a humid atmosphere, has a mechanical profile
defined by at least: (i) an elongation at break (.epsilon..sub.r)
of greater than or equal to about 160%; and (ii) a recovery at 300
seconds (R.sub.300) of greater than or equal to about 45%; and (2)
at least one additive (B) chosen from alkyl ethers of an alkylene
glycol and of a polyalkylene glycol chosen from diethylene glycol
ethyl ether, diethylene glycol methyl ether, diethylene glycol
butyl ether, diethylene glycol hexyl ether, dipropylene glycol
butyl ether, tripropylene glycol butyl ether, dipropylene glycol
ethyl ether, tripropylene glycol methyl ether and diethylene glycol
methyl ether.
16. The composition according to claim 15, further comprising a
cosmetically acceptable medium.
17. The composition according to claim 15, wherein said at least
one film-forming polymer (A) is present at a concentration ranging
from about 0.05% to about 20% by weight, relative to the total
weight of the composition.
18. The composition according to claim 17, wherein said at least
one film-forming polymer (A) is present at a concentration ranging
from about 0.1% to about 15% by weight, relative to the total
weight of the composition.
19. The composition according to claim 18, wherein said at least
one film-forming polymer (A) is present at a concentration ranging
from about 0.25% to about 10% by weight, relative to the total
weight of the composition.
20. The composition according to claim 15, wherein said at least
one additive (B) is present at a concentration ranging from about
0.05% to about 20% by weight, relative to the total weight of the
composition.
21. The composition according to claim 20, wherein said at least
one additive (B) is present at a concentration ranging from about
0.1% to about 15% by weight, relative to the total weight of the
composition.
22. The composition according to claim 21, wherein said at least
one additive (B) is present at a concentration ranging from about
0.25% to about 10% by weight, relative to the total weight of the
composition.
23. The composition according to claim 15, wherein the ratio of the
concentration of said at least one film-forming polymer (A) to the
concentration of said at least one additive (B) ranges from about
4000:1 to about 0.002:1.
24. The composition according to claim 15, further comprising at
least one cosmetic additive chosen from thickeners; anionic,
nonionic, cationic and amphoteric surfactants; fragrances;
preserving agents; sunscreens; proteins; vitamins; provitamins;
fixing and non-fixing, anionic, nonionic, cationic and amphoteric
polymers other than those defined in claim 75; mineral, plant and
synthetic oils; ceramides; pseudoceramides; and any other suitable
additive used in cosmetic compositions.
25. A process for preparing a cosmetic composition, said process
comprising combining at least one additive (B) and at least one
film-forming polymer (A) in a cosmetic composition, wherein a film
obtained by drying a mixture of said at least one film-forming
polymer (A) with ethanol or water, under a humid or dry atmosphere,
has a mechanical profile defined by at least: (i) an elongation at
break (.epsilon.r) of greater than or equal to about 160%; and (ii)
a recovery at 300 seconds (R.sub.300) of greater than or equal to
about 45%, and wherein said at least one additive (B) is chosen
from alkyl ethers of an alkylene glycol and of a polyalkylene
glycol chosen from diethylene glycol ethyl ether, diethylene glycol
methyl ether, diethylene glycol butyl ether, diethylene glycol
hexyl ether, dipropylene glycol butyl ether, tripropylene glycol
butyl ether, dipropylene glycol ethyl ether, tripropylene glycol
methyl ether and diethylene glycol methyl ether.
26. A process for obtaining a film, obtained by drying a mixture of
at least one film-forming polymer (A) with ethanol or water, under
a humid atmosphere, wherein said film has a mechanical profile
defined by at least one of: (i) an elongation at break
(.epsilon..sub.r) of greater than or equal to 160%; and (ii) a
recovery at 300 seconds (R.sub.300) of greater than or equal to
45%; comprising combining said at least one film-forming polymer
(A) with at least one additive (B) chosen from alkyl ethers of an
alkylene glycol and of a polyalkylene glycol chosen from diethylene
glycol ethyl ether, diethylene glycol methyl ether, diethylene
glycol butyl ether, diethylene glycol hexyl ether, dipropylene
glycol butyl ether, tripropylene glycol butyl ether, dipropylene
glycol ethyl ether, tripropylene glycol methyl ether and diethylene
glycol methyl ether.
Description
[0001] The invention relates to a cosmetic composition comprising,
in a cosmetically acceptable medium, at least one film-forming
polymer (A) with specific characteristics and at least one additive
(B), the latter being chosen such that the film formed on the hair
after applying the cosmetic composition keeps its mechanical
properties irrespective of the hygrometric conditions. The
invention is also directed towards a process for shaping or holding
the hair using this composition, as well as to its use for
formulating cosmetic products such as lacquers, sprays or mousses,
in order to hold or shape the hair style.
[0002] The compositions in accordance with the invention can be
applied to the skin, the nails, the lips, the hair, the eyebrows or
the eyelashes.
[0003] For the purposes of the present invention, the expression
"styling composition" means compositions for holding and/or fixing
the hair.
[0004] Among the haircare products for fixing the hair that are
most widely available on the cosmetics market, mention may be made
of compositions for spraying as an aerosol or in a pump-dispenser
bottle such as lacquers, sprays or mousses, consisting essentially
of a solution, usually an alcoholic or aqueous-alcoholic solution,
and of a film-forming polymer which is soluble in water or in
alcohol, mixed with various cosmetic adjuvants.
[0005] After application to the hair, these haircare products
generally form a film which holds the hair style in the shape
desired by the user. By appropriately selecting the polymers
present in the composition, it is already possible to modify the
mechanical properties of this film, such as the hardness, the
elasticity or the elongation at break, and to do so under given
humidity and temperature conditions.
[0006] However, these mechanical properties are generally dependent
on the external conditions, such as the hygrometric conditions.
Thus, a haircare composition which gives a film with satisfactory
properties under certain humidity conditions can give poorer
results under other humidity conditions, for example a soft film
which does not hold the hair style.
[0007] There is thus a need to find formulations for holding and/or
fixing the hair style whose mechanical performance qualities, in
particular the elasticity and flexibility, are maintained
irrespective of the hygrometric conditions, and in particular in
passing from a humid atmosphere to a dry atmosphere.
[0008] The Applicant has discovered, surprisingly and unexpectedly,
that it is possible to overcome the technical problem mentioned
above by using certain specific combinations of film-forming
polymer(s) and additive(s).
[0009] A subject of the invention is a cosmetic composition
comprising, in a cosmetically acceptable medium:
[0010] (1) at least one film-forming polymer (A) chosen such that a
film obtained by drying a mixture of this polymer (A) with ethanol
or water, under a humid atmosphere, has a mechanical profile
defined by at least:
[0011] (i) an elongation at break (.epsilon..sub.r) of greater than
or equal to 160%;
[0012] (ii) a recovery at 300 seconds (R.sub.300) of greater than
or equal to 45%; and
[0013] (2) at least one additive (B) chosen from linear,
non-oxyalkylenated, functionalized or unfunctionalized silicones,
oxyalkylenated silicones, alkyl ethers of alkylene glycols or of
polyalkylene glycols comprising C.sub.1 to C.sub.15 alkyl groups
and polyurethanes comprising polyether and/or polycarbonate
units.
[0014] Another subject of the present invention relates to a
process for shaping or holding the hair style, comprising the use
of this composition.
[0015] Yet another subject of the present invention relates to the
use of at least one additive (B) chosen from linear,
non-oxyalkylenated, functionalized or unfunctionalized silicones,
oxyalkylenated silicones, alkyl ethers of alkylene glycols or of
polyalkylene glycols comprising C.sub.1 to C.sub.15 alkyl groups,
and polyurethanes comprising polyether and/or polycarbonate units,
in cosmetic compositions, in order to maintain the mechanical
profile of the film obtained by drying the said cosmetic
composition, in passing from a humid atmosphere to a dry
atmosphere.
[0016] One most particular subject of the invention relates to the
use of at least one such additive (B) in a cosmetic composition
comprising at least one film-forming polymer (A) chosen such that a
film obtained by drying a mixture of the said composition, under
humid or dry atmosphere, has a mechanical profile defined by at
least:
[0017] (i) an elongation at break (.epsilon..sub.r) of greater than
or equal to 160%;
[0018] (ii) a recovery at 300 seconds (R.sub.300) of greater than
or equal to 45%.
[0019] These characteristics are reflected by a maintenance of the
flexibility and elasticity qualities of the films irrespective of
the level of humidity. This explains the constancy of the results
of holding on hair, independently of the level of humidity.
[0020] The polymers (A) that are particularly targeted by the
present invention are those distributed by Goodrich under the name
Avalure AC 315.RTM. and V29.RTM..
[0021] For the purposes of the present invention, the expression
"humid atmosphere" means, for example, the environment obtained by
an atmosphere of air with a water vapour content of about 12 grams
to 13 grams per kilogram of dry air, and the expression "dry
atmosphere" means, for example, the environment obtained by an air
atmosphere with a water vapour content of about 7 grams per
kilogram of dry air.
[0022] For the purposes of the present invention, the expression
"film obtained by drying under a humid or dry atmosphere" means the
film obtained under these conditions starting with a mixture
containing 6% active material (a.m.) of polymer A, alone or in the
presence of the additive B, with ethanol or water, the amount of
mixture being adapted to obtain in a Teflon matrix a film 500.+-.50
.mu.m thick. The drying is continued until the weight of the film
no longer changes, which represents about 12 days. The polymers A
that are soluble or partially soluble in ethanol are tested in
ethanol. The other polymers are tested in water in soluble or
dispersed form.
[0023] For the purposes of the present invention, the elongation at
break and the degree of recovery are evaluated by means of the
tests described below.
[0024] To carry out the tensile tests, the film is cut into
rectangular samples 80 mm long and 15 mm wide.
[0025] The tests are carried out on a machine sold under the name
Lloyd or sold under the name Zwick under the same conditions as for
the drying, i.e. a water vapour content in the atmosphere of 13
grams per kilogram of dry air.
[0026] The samples are drawn at a speed of 20 mm/min and the
distance between the jaws is 50.+-.1 mm.
[0027] To determine the instantaneous recovery (R.sub.i), the
following is performed:
[0028] the sample is drawn to 150% (.epsilon..sub.max), i.e. to 1.5
times its initial length (I.sub.0)
[0029] the stress is removed by imposing a return speed equal to
the tensile speed, i.e. 20 mm/min, and the elongation of the sample
is measured as a percentage, after return at zero load
(.epsilon..sub.i).
[0030] The percentage instantaneous recovery (R.sub.i) is given by
the formula below:
R.sub.i=((.epsilon..sub.max-.epsilon..sub.i)/.epsilon..sub.max).times.100
[0031] In order to determine the recovery at 300 seconds, the
sample which has undergone the above operations is maintained at
zero stress for a further 300 seconds and the percentage elongation
(R.sub.300) is measured.
[0032] The percentage recovery at 300 seconds (R.sub.300) is given
by the formula below:
R.sub.300=((.epsilon..sub.max-.epsilon..sub.300)/.epsilon..sub.max).times.-
100
[0033] For the purposes of the present invention, the expression
"non-oxyalkylenated silicone" means any organosilicon polymer or
oligomer of linear, branched or crosslinked structure and of
variable molecular weight, which is volatile or non-volatile,
obtained by polymerization and/or polycondensation of suitably
functionalized silanes, and consisting essentially of a repetition
of main units in which the silicon atoms are linked together via
oxygen atoms, forming a siloxane bond .ident.Si--O--Si.ident.,
optionally substituted hydrocarbon-based radicals being linked
directly via a carbon atom to the said silicon atoms. The
hydrocarbon-based radicals that are most common are alkyl radicals,
especially C.sub.1-C.sub.10 alkyl radicals and in particular
methyl, as well as fluoroalkyl radicals.
[0034] The non-oxyalkylenated silicones can be
polydialkylsiloxanes, in particular polydimethyl-siloxanes, or
polyarylsiloxanes such as polyphenyl-siloxanes, or
polyalkylarylsiloxanes, such as polymethylphenylsiloxanes.
[0035] The non-oxyalkylenated silicones can also be modified, for
example with carboxylic groups.
[0036] The products sold under the brand name Oil M 642, SLM 23
000/1 or SLM 23 000/2 by the company Wacker, or alternatively under
the brand name 176-12057 by the company General Electric, or
alternatively under the brand name FZ 3703 by the company OSI, or
alternatively under the brand name BY 16 880 by the company Toray
Silicone are advantageously used.
[0037] The number-average molecular mass of the silicone polymer is
preferably between 10,000 and 1,000,000 approximately, and even
more preferably between 10,000 and 100,000 approximately.
[0038] Other non-oxyalkylenated silicones that are particularly
suitable for carrying out the present invention are silicones
comprising at least one substituent containing at least two
identical or different groups chosen from carboxylic acids or salts
thereof, amides and esters, at least one of these groups being a
carboxylic acid or salts thereof.
[0039] Such silicones are sold, for example, under the brand name
SLM 23 105 by the company Wacker and under the brand name Densodrin
OF by the company BASF.
[0040] Volatile silicones can also be used.
[0041] Other types of non-oxyalkylenated silicones which may be
mentioned are those modified with alkoxy, sulphonate, thiol,
hydroxyl, amino or hydroxyacylamino groups.
[0042] In accordance with the invention, the oxyalkylenated
silicones are preferably chosen from the compounds of general
formula (I): 1
[0043] in which formula:
[0044] R.sub.1, which may be identical or different, represents a
hydrogen atom or a C.sub.1-C.sub.30 linear or branched alkyl
radical,
[0045] R.sub.2, which may be identical or different, represents
[0046] --(C.sub.xH.sub.2x)
--(OC.sub.2H.sub.4).sub.a--(OC.sub.3H.sub.6).su- b.b--OR.sub.3,
[0047] R.sub.3, which may be identical or different, is chosen from
a hydrogen atom, a linear or branched alkyl radical containing from
1 to 12 carbon atoms, and a linear or branched acyl radical
containing from 2 to 12 carbon atoms,
[0048] n ranges from 0 to 1000,
[0049] p ranges from 1 to 8,
[0050] a ranges from 0 to 50,
[0051] b ranges from 0 to 50,
[0052] a+b is greater than or equal to 1,
[0053] x ranges from 1 to 5, the number-average molecular weight
being greater than or equal to 15,000 and preferably between 25,000
and 75,000.
[0054] The oxyalkylenated silicones that are preferably used are
those of general formula (I) which satisfy at least one and
preferably all of the following conditions:
[0055] R.sub.1 denotes a methyl radical,
[0056] R.sub.3 represents a hydrogen atom, a methyl radical or an
acetyl radical and preferably hydrogen,
[0057] p ranges from 2 to 6,
[0058] a is between 5 and 40 and preferably between 15 and 30,
[0059] b is between 5 and 40 and preferably between 15 and 30,
[0060] x is equal to 2 or 3,
[0061] n ranges from 20 to 600, preferably from 50 to 500 and even
more particularly from 200 to 500.
[0062] Such silicones are disclosed, for example, in U.S. Pat. No.
4,311,695 which is included by way of reference.
[0063] The silicones that are most particularly preferred are, for
example, those sold as a 10% by weight solution in a cyclomethicone
(Dow Corning 344) under the trade name Fluid DC 3225 C by the
company Dow Corning or the product sold under the name Silwet L
7001 by the company Union Carbide, as well as the product sold by
Dow Corning under the name DC 190.
[0064] Among the polyurethanes which may be used as additive(s) (B)
in the context of the present invention, mention may be made in
particular of anionic, cationic, nonionic or amphoteric
polyurethanes, such as polyurethane-acrylics,
polyurethane-polyvinylpyrrolidones, polyester-polyurethanes,
polyether-polyurethanes, polyureas and polyurea/polyurethanes, and
mixtures thereof.
[0065] The polyurethane can be, for example, an aliphatic,
cycloaliphatic or aromatic polyurethane, polyurea/urethane or
polyurea copolymer comprising, alone or as a mixture,
[0066] at least one block of linear or branched aliphatic and/or
cycloaliphatic and/or aromatic polyester origin, and/or
[0067] at least one block of aliphatic and/or cycloaliphatic and/or
aromatic polyether origin, and/or
[0068] at least one substituted or unsubstituted, branched or
unbranched silicone block, for example polydimethylsiloxane or
polymethylphenylsiloxane, and/or
[0069] at least one block comprising fluoro groups.
[0070] The polyurethanes as defined in the invention can also be
obtained from branched or unbranched polyesters, or from alkyds
comprising labile hydrogens which are modified by reaction with a
diisocyanate and a difunctional organic compound (for example
dihydro, diamino or hydroxyamino), also comprising either a
carboxylic acid or carboxylate group, or a sulphonic acid or
sulphonate group, or alternatively a neutralizable tertiary amine
group or a quaternary ammonium group.
[0071] The polyurethanes that are particularly targeted by the
present invention are the polyurethanes PA Marin UA200.RTM. and PA
Marin UA310.RTM. sold by Sanyo, and Polyderm R sold by Alzo.
[0072] Among the alkyl ethers of alkylene glycols and of
polyalkylene glycols which can be used as additive(s) (B) in the
compositions according to the invention, mention may be made in
particular of diethylene glycol ethyl ether, diethylene glycol
methyl ether, diethylene glycol butyl ether or diethylene glycol
hexyl ether, dipropylene glycol butyl ether, tripropylene glycol
butyl ether, dipropylene glycol ethyl ether, tripropylene glycol
methyl ether and diethylene glycol methyl ether, and mixtures
thereof.
[0073] Additives (B) that are preferably used are oxyalkylenated
silicones and polyurethanes, and among these additives,
polyurethane-polyethers are preferred.
[0074] In the compositions in accordance with the invention, the
film-forming polymer(s) (A) is (are) preferably present at
concentrations of between 0.05% and 20% by weight, more preferably
between 0.1% and 15% by weight, and more preferably between 0.25%
and 10% by weight relative to the total weight of the
composition.
[0075] The additive (B) is preferably a non-oxyalkylenated silicone
modified with one or more carboxylic, alkoxy, sulphonate, thiol,
hydroxyl, amino or hydroxyacylamino groups, or unmodified such as
polydialkylsiloxane, polyarylsiloxane or
polyalkyl-arylsiloxane.
[0076] In the compositions in accordance with the invention, the
additive (s) (B) is (are) preferably present at concentrations of
between 0.05% and 20% by weight, more preferably between 0.1% and
15% by weight and more preferably between 0.25% and 10% by weight,
relative to the total weight of the composition.
[0077] The concentrations of polymer(s) (A) and of additives (B)
are advantageously chosen such that the ratio of the concentration
of polymer (A) to the concentration of polymer (B) is between 4000
and 0.002.
[0078] The cosmetically acceptable medium preferably consists of
water or one or more cosmetically acceptable solvents such as
alcohols or water-solvent(s) mixtures, these solvents preferably
being C.sub.1-C.sub.4 alcohols.
[0079] Among these alcohols which may be mentioned are ethanol and
isopropanol. Ethanol is particularly preferred.
[0080] The composition of the invention can also contain at least
one conventional cosmetic additive chosen from thickeners, anionic,
nonionic, cationic or amphoteric surfactants, fragrances,
preserving agents, sunscreens, proteins, vitamins, provitamins,
fixing or non-fixing, anionic, nonionic, cationic or amphoteric
polymers other than those of the invention, mineral, plant or
synthetic oils, ceramides, pseudoceramides and any other additive
conventionally used in cosmetic compositions intended to be applied
to the hair.
[0081] Needless to say, a person skilled in the art will take care
to select the optional compound(s) to be added to the composition
according to the invention such that the advantageous properties
intrinsically associated with the composition in accordance with
the invention are not, or are not substantially, adversely affected
by the addition envisaged.
[0082] These compositions can be packaged in various forms, in
particular in pump-dispenser bottles or in aerosol containers, in
order to apply the composition in vaporized form or in the form of
a mousse. Such packaging forms are indicated, for example, when it
is desired to obtain a spray, a lacquer or a mousse for fixing or
treating the hair. The compositions in accordance with the
invention can also be in the form of creams, gels, emulsions,
lotions or waxes.
[0083] When the composition according to the invention is packaged
in aerosol form in order to obtain a lacquer or a mousse, it
comprises at least one propellant which can be chosen from volatile
hydrocarbons such as n-butane, propane, isobutane and pentane, a
halohydrocarbon and mixtures thereof. Carbon dioxide, nitrous
oxide, dimethyl ether (DME), nitrogen or compressed air can also be
used as propellant. Mixtures of propellants can also be used.
Dimethyl ether is preferably used.
[0084] The propellant is advantageously present at a concentration
of between 5% and 90% by weight relative to the total weight of the
composition in the aerosol device, and more particularly at a
concentration of between 10% and 60%.
[0085] The compositions in accordance with the invention can be
applied to wet or dry hair.
[0086] The invention will be illustrated more fully with the aid of
the non-limiting example which follows.
[0087] All the percentages are relative percentages by weight
relative to the total weight of the composition, and a.m. means
active material.
EXAMPLE
[0088] Two compositions for holding and/or fixing the hair style in
accordance with the present invention are prepared comprising, as
polymer (A), Avalure AC315, and as additive (B), either the
polyurethane PA Marin UA 200.RTM. sold by Sanyo, or the silicone DC
190 sold by Dow Corning. A composition in accordance with the prior
art comprising only Avalure AC315 is also prepared. Table 1 below
summarizes the formulations prepared.
1TABLE 1 Composition 1 Composition 2 Composition 3 (prior art)
(invention) (invention) Avalure AC315 6% 5% 5% PA Marin UA200 -- 1%
-- Silicone DC190 -- -- 1% Ethanol q.s. 100 q.s. 100 q.s. 100
[0089] The flexibility and elasticity of the film formed using
compositions 1 to 3 are evaluated in humid and dry atmosphere. A
sensory test is used for this. The grades range from 0 (poor
performance) to 5 (excellent performance). The results obtained are
summarized in Table 2 below.
2 TABLE 2 Appearance of the films Composition Humid atmosphere Dry
atmosphere 1 (prior art) Flexibility 4 Flexibility 2 elasticity 3
elasticity 1 2 (invention) Flexibility 4 Flexibility 4 elasticity 2
elasticity 2.5 3 (invention) Flexibility 4 Flexibility 4 elasticity
3 elasticity 3
[0090] It results therefrom that the flexibility and elasticity of
the films obtained on the hair by drying the compositions in
accordance with the invention comprising a polymer (A) and an
additive (B) are virtually constant, in passing from a dry
atmosphere to a humid atmosphere. Conversely, the variation of
these properties is marked for the composition in accordance with
the prior art comprising Avalure AC315 alone, both as regards the
flexibility and the elasticity.
[0091] Compositions 1 to 3 packaged in aerosol form (65% fluid, 35%
DME) are applied to wigs made of European chestnut-brown hair.
After conditioning these wigs for 2 hours in a humid or dry
atmosphere, a panel of experts grades the hold of the hair style.
The following results collated in Table 3 below are obtained.
3 TABLE 3 Composition Humid atmosphere Dry atmosphere 1 (prior art)
Good hold Poor hold 2 (invention) Good hold Good hold 3 (invention)
Good hold Good hold
[0092] It results therefrom that only Compositions 2 and 3
according to the invention provide hold dependently of the degree
of humidity.
* * * * *