COMPOSITION COMPRISING AN OLIGOMER OF A HYDROXYLATED FATTY ACID TRIGLYCERIDE AND A SATURATED DIACID, A SOLID FATTY ALCOHOL AND A VEGETABLE PROTEIN HYDROLYSATE

Abstract

COMPOSITION COMPRISING AN OLIGOMER OF A HYDROXYLATED FATTY ACID TRIGLYCERIDE AND A SATURATED DIACID, A SOLID FATTY ALCOHOL AND A VEGETABLE PROTEIN HYDROLYSATE The present invention relates to a composition comprising an oligomer of a hydroxylated fatty acid triglyceride and a saturated diacid, a solid fatty alcohol, a vegetable protein hydrolysate, and optionally a fatty amine, said composition being free of cationic polymers, silicones and cationic surfactants other than fatty amines. The invention also relates to the use of the composition according to the invention for the treatment of keratin fibers, and more particularly for the repair and smoothing of hair. The invention also relates to a method for repairing keratin fibers, in particular human keratin fibers such as hair, comprising at least one step of applying the composition according to the invention to said fibers.

Description

Title of the invention: COMPOSITION COMPRISING AN OLIGOMER OF A FATTY ACID TRIGLYCERIDE HYDROXYLATED AND SATURATED DIACID, A SOLID FATTY ALCOHOL AND A VEGETABLE PROTEIN HYDROLYSATE Technical field of the invention

[0001] The present invention relates to a composition comprising an oligomer of a hydroxylated fatty acid triglyceride and a saturated diacid, a solid fatty alcohol, a vegetable protein hydrolyzate, and optionally a fatty amine, it being understood that the weight ratio between said oligomer(s) and the vegetable protein hydrolyzate(s) is greater than or equal to 1, said composition being free of cationic polymers, silicones and cationic surfactants other than fatty amines. More particularly, the composition is a cosmetic composition, intended for the treatment of keratin fibers, in particular hair, and more particularly still for the repair and smoothing of hair. The invention also relates to a method for treating keratin fibers, in particular human keratin fibers such as hair, comprising at least one step of applying the composition according to the invention to said fibers. Background to the invention

[0002] Hair is a keratinous substance, which is repeatedly subjected to various stresses related to environmental factors (such as exposure to UV rays and pollution) and to treatments such as bleaching, coloring, perming or thermal straightening. Hair is also regularly exposed to mechanical stress, in particular during hair care routines (for example due to frequent brushing, or detangling and styling operations).

[0003] Thus, the structure of the hair tends to be altered. More precisely, the cuticles are lifted and the hair fibers become porous, while split ends appear at the tips. In general, the fibers bend and position themselves in a disorganized manner relative to each other. The consequences on the texture of the hair are noticeable because it becomes difficult to comb in both wet and dry conditions, has an increased susceptibility to electrostatic phenomena, is difficult to manage when styling and has a rough appearance, particularly at the tips. Overall, the hair, and especially its ends, is weakened, dehydrated and breaks more easily.

[0004] There is a need to provide compositions which make it possible to overcome all these drawbacks, and which are in particular capable of strengthening keratin fibers by repairing the cuticles and sealing split ends where applicable. In particular, there is a need to restore axial cohesion of the ends in order to realign the keratin fibers (discipline), and to give damaged hair a smoother feel and appearance, flexibility, to facilitate detangling and individualization (also called hairline), and this in a lasting manner.

[0005] Furthermore, there is a need to provide a composition that is easily applied to damp hair with a texture capable of giving it good flexibility upon application (also called hair transformation) and good coating quality. The composition must also be stable during storage in order to obtain this particular texture at the time of application, while being based on a majority of renewable and biodegradable ingredients.

[0006] These objectives can be achieved in whole or in part by the compositions according to the invention. In particular, the hair compositions according to the invention have good cosmetic properties despite the absence of cationic polymers, silicones and cationic surfactants other than fatty amines. Summary of the invention

[0007] In a first aspect, the present invention relates to a composition (C), in particular a cosmetic composition, comprising: i. at least one oligomer of a hydroxylated fatty acid triglyceride and a saturated dibasic acid; ii. at least one solid fatty alcohol; iii. at least one vegetable protein hydrolysate; and iv. optionally at least one fatty amine,

[0008] it being understood that the weight ratio between said oligomer(s) and the vegetable protein hydrolysate(s) is greater than or equal to 1,

[0009] said composition being free of cationic polymers, silicones and cationic surfactants other than fatty amines.

[0010] In a second aspect, the invention also relates to a method for the cosmetic treatment of human keratin fibers such as hair, comprising the application to said keratin fibers of a composition (C) as defined above. More particularly, the method allows the repair of keratin fibers. Even more particularly, the method allows the repair and smoothing of the hair, facilitates its detangling, allows its softening at the time of application and gives it good coating properties.

[0011] In a third aspect, the present invention relates to the use of a composition (C) as defined above for the treatment of keratin fibers, and more particularly the repair and smoothing of hair. Detailed description of the invention

[0012] Other objects, characteristics, aspects and advantages of the invention will appear even more clearly on reading the description and the example which follows.

[0013] In the following, and unless otherwise indicated:

[0014] The limits of a domain of values ​​are included in this domain, in particular in the expressions “between”, “ranging from ... to ..." and “comprising ... to ...".

[0015] The expression "at least one" is equivalent to the expression "one or more" and may be substituted therefor; the expression "between" is equivalent to the expression "ranging from" and may be substituted therefor, and implies that the limits are included.

[0016] By "keratin fibers" is meant fibers of human or animal origin such as hair, body hair, eyelashes, eyebrows, wool, angora, cashmere or fur. According to the present invention, the keratin fibers are preferably human keratin fibers, more preferably head hair.

[0017] The term "lasting", when used to characterize a cosmetic effect within the scope of the present invention, means that the effect persists after one or more shampoos.

[0018] By "transformation" or "transformation upon application" is meant the softening of the keratin fiber upon contact with a composition. More particularly, the composition (C) according to the invention is applied to damp hair. The transformation property is therefore evaluated on damp hair.

[0019] Oligomer of a hydroxylated fatty acid triglyceride and a saturated dibasic acid

[0020] The composition according to the present invention comprises at least one oligomer of a hydroxylated fatty acid triglyceride and a saturated diacid. If two or more oligomers of a hydroxylated fatty acid triglyceride and a saturated diacid are used, they may be the same or different.

[0021] The term "oligomer" herein refers to a polymer in which a relatively small number of monomers are linked. It is preferable that the number of monomers in the oligomer is 100 or less, more preferably 50 or less, and even more preferably 20 or less.

[0022] The oligomer of a hydroxylated fatty acid triglyceride and a saturated diacid can be obtained by the reaction of a hydroxylated fatty acid triglyceride (such as hydrogenated castor oil with the INCI name "hydrogenated castor oil") and a saturated diacid. The reaction can be an esterification.

[0023] According to the present invention, the diacid is said to be saturated when the hydrocarbon chain of which it is composed does not contain an unsaturated group, i.e. a carbon-carbon double bond. The term "diacid" here designates a hydrocarbon compound comprising two carboxyl functions -COOH. The composition according to the invention may comprise a single diacid or a mixture of several different diacids.

[0024] Similarly, within the meaning of the present invention, the oligomer may be a mixture of several different oligomers.

[0025] Among the saturated diacids which can be used, mention may be made of sebacic acid (or 1,10-decanedioic acid), malonic acid, succinic acid, glutaric acid, adipic acid, azelaic acid, octadecamethylene dicarboxylic acid and eicosadicarboxylic acid.

[0026] More particularly, the oligomer may be an oligoester whose monomers are represented by the following formulas (A) of triglyceride and (B) of diacid: | p R2 R2 | CHOH t^HOH ÇHOH | Ri m ri ! I ' I ' 9 9 9 CH,----------- Œ--CH * $ t A)

[0027] in which:

[0028] Ri represents a saturated or unsaturated, linear or branched alkylene group, comprising for example from 1 to 20 carbon atoms, preferably represents the group -(CH2)r, where “1” can vary from 1 to 20, and preferably from 3 to 16, better still from 6 to 12,

[0029] R2 represents a saturated or unsaturated, linear or branched alkyl group, comprising for example from 1 to 12 carbon atoms, preferably represents the group -(CH2)m-CH3, where "m" can vary from 0 to 11, and preferably from 2 to 11, better still from 3 to 9, and

[0030] Xi represents a linear or branched alkylene group, preferably represents the linear alkylene group -(CH2 )x-, where "x" is an integer ranging from 1 to 30, and preferably from 3 to 15.

[0031] According to a preferred embodiment, 1=10 and m=5, and the group

[0032]

[0033]

[0034]

[0035]

[0036]

[0037]

[0038]

[0039]

[0040]

[0041]

[0042] QH $ ——>1--C--R2 H in formula (A) above represents the alkyl residue of 12-hydroxy stearic acid (the major component of hydrogenated castor oil). When the diacid is sebacic acid, Xi represents the linear alkylene group -(CH2)X-, where "x" is equal to 8. The average degree of polymerization of the oligomer can vary between 3 and 12, preferably between 4 and 10. Thus, the oligomer of a triglyceride of a hydroxylated fatty acid and a saturated diacid can be represented by the following formula (C): R2 R2 »2 0 0 <c> fl IIHH i —Ho—CH. CHÔH * ii I * hm C—0 C™ 0 0 0 0 -----011------ in which each of Rb R2 and Xia the meaning explained above, and n means an average degree of polymerization between 3 and 12, preferably between 4 and 10. It is better that the following group in formula (C) above represents the alkyl residue of 12-hydroxystearic acid, and that Xi represents -(CH2 )8 -. It is preferred that the oligomer of a triglyceride of a hydroxy fatty acid and a saturated dibasic acid is an oligoester of hydrogenated castor oil and sebacic acid, i.e., a hydrogenated castor oil / sebacic acid copolymer formed from hydrogenated castor oil and sebacic acid. The compound with the INCI name “hydrogenated castor oil / sebacic acid copolymer” will preferably be used.

[0043] Such compounds are notably sold by the company CRODA under the trade names CROMADOL CWS-5, CROMADOL CWS-10, CRODABOND CSA.

[0044] The oligomer(s) of a triglyceride of a hydroxylated fatty acid and of a saturated diacid may be present in the composition according to the present invention in a total amount of 0.1% by weight or more, preferably 0.2% by weight or more relative to the total weight of the composition.

[0045] The oligomer(s) of a triglyceride of a hydroxylated fatty acid and of a saturated diacid may be present in the composition according to the present invention in a total amount equal to or less than 10% by weight, preferably equal to or less than 5% by weight, and more preferably equal to or less than 2% by weight, relative to the total weight of the composition.

[0046] The oligomer(s) of a triglyceride of a hydroxylated fatty acid and of a saturated diacid may be present in the composition according to the present invention in a total amount ranging from 0.1% to 10% by weight, preferably from 0.2% to 5% by weight, and more preferably from 0.2% to 2% by weight, relative to the total weight of the composition. Fatty alcohols

[0047] The composition according to the invention comprises at least one solid fatty alcohol.

[0048] By "fatty alcohol" is meant an aliphatic, linear or branched, saturated or unsaturated, non-glycerolated and non-oxyalkylenated alcohol comprising from 6 to 40 carbon atoms and a single hydroxyl group, and preferably having from 8 to 30 carbon atoms, preferably from 12 to 24 carbon atoms, better still from 14 to 22 carbon atoms. The fatty alcohols according to the invention are therefore fatty monoalcohols.

[0049] By “solid” is meant a compound that is solid at a temperature of 25°C and at atmospheric pressure (760 mm Hg or 1,013.105 Pa). Preferably, this compound has a viscosity greater than 2 Pa.s at 25°C for a shear rate of 1 s1.

[0050] The solid fatty alcohols that can be used are insoluble in water, that is to say they have a solubility in water of less than 1% by weight and preferably less than 0.5% by weight, at 25°C, 1 atm.

[0051] The solid fatty alcohols according to the invention are chosen from saturated or unsaturated, linear or branched alcohols, comprising from 8 to 30 carbon atoms, preferably from 12 to 24 carbon atoms, better still from 14 to 22 carbon atoms.

[0052] More preferably, the solid fatty alcohols according to the invention are chosen from saturated, linear alcohols, comprising from 8 to 30 carbon atoms, preferably from 12 to 24 carbon atoms, better still from 14 to 22 carbon atoms.

[0053] Preferably, the solid fatty alcohols according to the invention are chosen from fatty alcohols having a melting temperature greater than 30°C, preferably greater than 35°C.

[0054] Preferably, the solid fatty alcohol(s) are chosen from cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, and mixtures thereof, more preferably still cetyl alcohol, stearyl alcohol, and mixtures thereof such as cetearyl alcohol, and more preferably still cetyl alcohol and stearyl alcohol.

[0055] Advantageously, the total quantity of the solid fatty alcohol(s) ranges from 0.1 to 20% by weight, preferably from 1 to 10% by weight, more preferably from 1 to 5% by weight relative to the total weight of the composition according to the invention.

[0056] More particularly, when they are present in the composition according to the invention, cetyl alcohol, stearyl alcohol, and their mixtures such as cetearyl alcohol are preferably present in a total amount ranging from 0.1 to 20% by weight, preferably from 1 to 10% by weight, more preferably from 1 to 5% by weight relative to the total weight of the composition according to the invention. Vegetable protein hydrolyzate

[0057] The composition according to the invention comprises at least one vegetable protein hydrolyzate.

[0058] The term "protein hydrolysate" as used herein means the product of the hydrolysis of homogeneous or heterogeneous proteins, or their respective components, derivatives or combinations thereof, from sources of plant origin including, but not limited to, plants and their respective components, seeds.

[0059] Preferably, the protein(s) is(are) chosen from pea protein, soy protein, wheat protein, corn protein, rice protein, sweet almond protein, and mixtures thereof.

[0060] More preferably, the vegetable protein hydrolyzate is a soy protein hydrolyzate or a rice protein hydrolyzate or a mixture of the two, even more preferably a soy protein hydrolyzate.

[0061] Preferably, the composition according to the invention comprises one or more hydrolysates of vegetable protein(s).

[0062] Advantageously, the total quantity of the protein hydrolysate(s) ranges from 0.01 to 10% by weight, preferably from 0.05 to 5% by weight, more preferably from 0.08 to 1% by weight relative to the total weight of the composition according to the invention. Fatty amines

[0063] Composition (C) according to the present invention may optionally comprise one or more fatty amines.

[0064] The term “fatty amine” means a compound comprising at least one primary, secondary or tertiary amine function, optionally (poly)oxyalkylenated, or their salts and comprising at least one C6-C30 hydrocarbon chain.

[0065] Preferably, the composition (C) according to the present invention comprises one or more fatty amines.

[0066] Preferably, the fatty amines according to the invention are not (poly)oxyalkylenated.

[0067] The fatty amines that can be used in the context of the invention may be fatty amidoamines, tertiary fatty amines or a mixture of these compounds.

[0068] As fatty amidoamines, mention may be made of fatty amidoamines in which the C6-C3o fatty chain can be carried by the amine group or by the amido group.

[0069] The term amidoamine means a compound comprising at least one amide function and at least one primary, secondary or tertiary amine function.

[0070] Fatty amidoamine means an amidoamine comprising at least one C6-C30 hydrocarbon chain.

[0071] Preferably, the fatty amidoamines according to the invention are not in quaternized form when they are introduced into the composition (which does not exclude the fact that they can quaternize in situ).

[0072] Preferably, the fatty amidoamines according to the invention are not (poly)oxyalkylenated.

[0073] Among the amidoamines that can be used in the context of the invention, mention may be made of the amidoamines of formula (D): RCONHR”N(R')2 (D)

[0074] in which:

[0075] - R represents a monovalent hydrocarbon radical having from 5 to 29 atoms of carbon, preferably from 7 to 23 carbon atoms, and in particular a C5-C29, preferably C7-C23, linear or branched, saturated or unsaturated alkyl radical, optionally substituted by one or more hydroxyl groups (-OH); preferably a linear or branched C5-C29, better still C7-C23, alkyl radical, or a C5-C29, better still C7-C23, alkenyl radical; preferentially a linear or branched, saturated radical or radical comprising double unsaturation (C=C) at C7-C23;

[0076] - R” represents a divalent hydrocarbon radical, preferably linear, having 1 with 6 carbon atoms, preferably 2 to 4 carbon atoms; better still 3 carbon atoms; and

[0077] - R', identical or different, represent a monovalent hydrocarbon radical having 1 to 6 carbon atoms, preferably 1 to 4 carbon atoms, linear or branched, saturated or unsaturated; preferably a methyl or ethyl radical.

[0078] Preferably, in formula (D):

[0079] - R' are identical and represent a methyl group;

[0080] - R' ' represents a linear divalent hydrocarbon radical, having 2 to 4 atoms of carbon; better 3 carbon atoms and

[0081] - R represents a linear or branched hydrocarbon radical, saturated or comprising a unsaturation (C=C), in C7-C23.

[0082] The amidoamines of formula (D) can be chosen, alone or in a mixture, from the following compounds:

[0083] oleamidopropyl dimethylamine, stearamidopropyl dimethylamine, isostearamidopropyl dimethylamine, stearamidoethyl dimethylamine, lauramidopropyl dimethylamine, myristamidopropyl dimethylamine, behenamidopropyl dimethylamine, dilinoleamidopropyl dimethylamine, palmitamidopropyl dimethylamine, ricinoleamindopropyl dimethylamine, soyamidopropyl dimethylamine, avocadoamidopropyl dimethylamine, cocamidopropyl dimethylamine, minkamidopropyl dimethylamine, oatamidopropyl dimethylamine, sesamidopropyl dimethylamine, tallamidopropyl dimethylamine, olivamidopropyl dimethylamine, palmitamidopropyl dimethylamine, stearamidoethyl diethylamine, brassicamidopropyl dimethylamine.

[0084] Preferably, the fatty amidoamines are chosen from oleamidopropyl dimethylamine, stearamidopropyl dimethylamine, brassicamidopropyl dimethylamine and mixtures thereof.

[0085] As tertiary fatty amines, mention may be made in particular of tertiary fatty amines of formula (E): RN(R')2 (E)

[0086] in which:

[0087] - R represents a monovalent hydrocarbon radical having from 6 to 30 atoms of carbon, preferably from 8 to 24 carbon atoms, and in particular a C6-C30, preferably C8-C24, linear or branched, saturated or unsaturated alkyl radical; preferably a linear or branched C6-C30, better still C8-C24 alkyl radical; or a linear or branched C6-C30, preferably C8-C24, alkenyl radical; and

[0088] - R', identical or different, represent a monovalent hydrocarbon radical having 1 to 6 carbon atoms, preferably 1 to 4 carbon atoms, linear or branched, saturated or unsaturated; preferably a methyl radical.

[0089] The following compounds may be mentioned as fatty amines corresponding to formula (E): dimethyllauramine, dimethylbehenamine, dimethylcocamine, dimethylmyristamine, dimethylpalmitamine, dimethylstearamine, dimethyltallowamine, dimethylsoyamine, and mixtures thereof.

[0090] In a preferred embodiment, the composition according to the invention comprises one or more fatty amines chosen from fatty amidoamines corresponding to formula (D) as defined above, and more particularly chosen from oleamidopropyl dimethylamine, stearamidopropyl dimethylamine, brassicamidopropyl dimethylamine and mixtures thereof. More particularly still, the composition according to the invention comprises stearamidopropyl dimethylamine.

[0091] When they are present in the composition according to the invention, the fatty amine(s) are preferably present in a total amount ranging from 0.1 to 10% by weight, better still from 0.25 to 5% by weight, or even from 0.5 to 2.5% by weight, relative to the total weight of the composition.

[0092] When they are present in the composition according to the invention, the fatty amidoamine(s) of formula (D) as defined above are preferably present in a total amount ranging from 0.1 to 10% by weight, better still from 0.25 to 5% by weight, or even from 0.5 to 2.5% by weight, relative to the total weight of the composition.

[0093] More particularly, when they are present in the composition according to the invention, the fatty amidoamine(s) chosen from oleamidopropyl dimethylamine, stearamidopropyl dimethylamine, brassicamidopropyl dimethylamine and mixtures thereof, are preferably present in a total amount ranging from 0.1 to 10% by weight, better still from 0.25 to 5% by weight, or even from 0.5 to 2.5% by weight, relative to the total weight of the composition.

[0094] Even more preferably, when the composition according to the invention contains stearamidopropyl dimethylamine, it is present in a total amount ranging from 0.1 to 10% by weight, better still from 0.25 to 5% by weight, or even from 0.5 to 2.5% by weight, relative to the total weight of the composition. Fatty esters

[0095] The composition (C) according to the present invention may optionally comprise one or more fatty esters, i.e. one or more esters of fatty carboxylic acid(s) and / or fatty alcohol(s). These esters may be solid or liquid (at 25°C, 1 atm). They are different from the compounds previously described.

[0096] Preferably, the composition (C) according to the present invention comprises one or more fatty esters.

[0097] Liquid fatty esters

[0098] Among the liquid esters of fatty acid and / or fatty alcohols, mention may in particular be made of esters of saturated or unsaturated aliphatic mono or polyacids, linear in C1 to C26 or branched in C3 to C26 and of saturated or unsaturated aliphatic mono or polyalcohols, linear in C1 to C26 or branched in C3 to C26, the total number of carbons of the esters being greater than or equal to 8, more advantageously greater than or equal to 10.

[0099] For monoalcohol esters, at least one of the alcohol or acid from which the esters of the invention are derived may be branched.

[0100] Among the monoesters, mention may be made of dihydroabietyl behenate; octyldodecyl behenate; isocetyl behenate; isostearyl lactate; lauryl lactate; linoleyl lactate; oleyl lactate; isostearyl octanoate; isocetyl octanoate; octyl octanoate; decyl oleate; isocetyl isostearate; isocetyl laurate; isoamyl laurate, isocetyl stearate; isodecyl octanoate; isodecyl oleate; isononyl isononanoate; isostearyl palmitate; methyl acetyl ricinoleate; octyl isononanoate; 2-ethylhexyl isononate; octyldodecyl erucate; oleyl erucate; ethyl and isopropyl palmitates, such as ethyl-2-hexyl palmitate, 2-octyldecyl palmitate; alkyl myristates such as isopropyl, 2-octyldodecyl myristate; isobutyl stearate; 2-hexyldecyl laurate, and mixtures thereof.

[0101] Preferably among the monoesters, use will be made of fatty acid and / or fatty alcohol esters such that the alcohol contains at least 10 carbon atoms and the carboxylic acid contains 10 or fewer carbon atoms, preferentially chosen from isostearyl lactate; lauryl lactate; linoleyl lactate; oleyl lactate; isostearyl octanoate; isocetyl octanoate; octyl octanoate, isodecyl octanoate, coco caprylate, coco caprate, and mixtures thereof.

[0102] Still within the framework of this variant, it is also possible to use esters of C4 to C22 di or tricarboxylic acids and C1 to C22 alcohols and esters of mono-, di-, or tricarboxylic acids and C2 to C26 di-, tri-, tetra- or pentahydroxy alcohols.

[0103] Mention may in particular be made of: diethyl sebacate; diisopropyl sebacate; diisopropyl adipate; di-n-propyl adipate; dioctyl adipate; diisostearyl adipate; dioctyl maleate; glyceryl undecylenate; octyl-dodecyl stearoyl stearate; pentaerythrityl monoricinoleate; pentaerythrityl tetraisononanoate; pentaerythrityl tetrapelargonate; pentaerythrityl tetraisostearate; pentaerythrityl tetraoctanoate; propylene glycol dicaprylate; propylene glycol dicaprate, tridecyl erucate; triisopropyl citrate; triisotearyl citrate; glyceryl trilactate; glyceryl trioctanoate; trioctyldodecyl citrate; trioleyl citrate; propylene glycol dioctanoate; neopentyl glycol diheptanoate; diethylene glycol diisocyanate; polyethylene glycol distearates, and mixtures thereof.

[0104] The composition may also comprise, as fatty ester, esters and diesters of sugars of fatty acids in C6 to C30, preferably in C12 to C22. It is recalled that the term "sugar" means oxygenated hydrocarbon compounds which have several alcohol functions, with or without aldehyde or ketone function, and which comprise at least 4 carbon atoms. These sugars can be monosaccharides, oligosaccharides or polysaccharides.

[0105] Suitable sugars that may be mentioned include, for example, sucrose (or saccharose), glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose, lactose, and their derivatives, in particular alkylated ones, such as methylated derivatives such as methylglucose.

[0106] The esters of sugars and fatty acids may be chosen in particular from the group comprising the esters or mixtures of esters of sugars described above and of C6 to C30, preferably C12 to C22, linear or branched, saturated or unsaturated fatty acids. If they are unsaturated, these compounds may comprise one to three carbon-carbon double bonds, conjugated or not.

[0107] The esters according to this variant can also be chosen from mono-, di-, tri- and tetra-esters, polyesters and their mixtures.

[0108] These esters may be, for example, oleate, laurate, palmitate, myristate, behenate, cocoate, stearate, linoleate, linolenate, caprate, arachidonate, or mixtures thereof, such as in particular the mixed esters oleo-palmitate, oleo-stearate, palmito-stearate.

[0109] More particularly, mono- and di-esters are used, and in particular mono- or di-oleate, stearate, behenate, oleopalmitate, linoleate, linolenate, oleostearate, of sucrose, glucose or methylglucose, and mixtures thereof.

[0110] An example of this is the product sold under the name Glucate® DO by the company Amerchol, which is a methylglucose dioleate. [YES] Solid fatty esters

[0112] Among the solid esters of fatty acid and / or fatty alcohol that may be used, mention may be made of esters derived from C9-C26 carboxylic fatty acid and / or C9-C26 fatty alcohol.

[0113] More particularly, these solid fatty esters are esters of saturated, linear or branched carboxylic acid, comprising at least 10 carbon atoms, preferably from 10 to 30 carbon atoms and more particularly from 12 to 24 carbon atoms, and of saturated, linear or branched monoalcohol, comprising at least 10 carbon atoms, preferably from 10 to 30 carbon atoms and more particularly from 12 to 24 carbon atoms. The saturated carboxylic acids may optionally be hydroxylated, and are preferably monocarboxylic acids.

[0114] It is also possible to use esters of C4-C22 di- or tricarboxylic acids and C1-C22 alcohols and esters of mono-, di- or tricarboxylic acids and C2-C26 di-, tri-, tetra- or pentahydroxylated alcohols.

[0116] Mention may in particular be made of octyldodecyl behenate, isocetyl behenate, cetyl lactate, stearyl octanoate, octyl octanoate, cetyl octanoate, decyl oleate, hexyl stearate, octyl stearate, C9-C26 alkyl stearates (including myristyl stearate, cetyl stearate and stearyl stearate), octyl pelargonate, C9-C26 alkyl myristates (including cetyl myristate, myristyl myristate and stearyl myristate), diethyl sebacate, diisopropyl sebacate, diisopropyl adipate, di-n-propyl adipate, dioctyl adipate, dioctyl maleate, octyl palmitate, C9-C26 alkyl palmitates (including palmitate myristyl, cetyl palmitate and stearyl palmitate), and mixtures thereof. More particularly, mention may be made of compounds with the INCI name “cetyl esters”.

[0117] In a preferred embodiment, the fatty esters according to the invention are chosen from liquid esters of fatty acid and / or fatty alcohol such that the alcohol contains at least 10 carbon atoms and the carboxylic acid contains 10 or fewer carbon atoms, preferentially chosen from isostearyl lactate; lauryl lactate; linoleyl lactate; oleyl lactate; isostearyl octanoate; isocetyl octanoate; octyl octanoate, isodecyl octanoate, coco caprylate, coco caprate, and mixtures thereof. Coco caprate, coco caprylate, or mixtures thereof will preferably be used. The ester with the INCI name "coco caprylate / caprate" is particularly preferred.

[0118] In another embodiment, the esters with the INCI name “cetyl esters” and isoamyl laurate, alone or as a mixture, more preferably as a mixture, are preferred.

[0119] When it(they) is(are) present in the cosmetic composition according to the invention, the total fatty ester content preferably ranges from 0.05 to 15% by weight, better still from 0.1 to 10% by weight, even better still from 0.2 to 8% by weight, even better still from 0.2 to 5% by weight, or even from 0.3 to 2% by weight, relative to the total weight of the composition.

[0120] Advantageously, the composition according to the invention comprises the ester(s) of carboxylic acid(s) and alcohol(s) comprising at least 8 carbon atoms, in a total amount ranging from 0.05 to 15% by weight, better still from 0.1 to 10% by weight, even better still from 0.2 to 8% by weight, even better still from 0.2 to 5% by weight, or even from 0.3 to 2% by weight, relative to the total weight of the composition.

[0121] In a preferred embodiment, the composition according to the invention comprises one or more liquid esters of fatty acid and / or fatty alcohol such that the alcohol contains at least 10 carbon atoms and the carboxylic acid contains 10 or fewer carbon atoms, preferentially chosen from isostearyl lactate; lauryl lactate; linoleyl lactate; oleyl lactate; isostearyl octanoate; isocetyl octanoate; octyl octanoate, isodecyl octanoate, coco caprylate, coco caprate, and mixtures thereof, in a total amount ranging from 0.05 to 15% by weight, better from 0.1 to 10% by weight, even better from 0.2 to 8% by weight, even better from 0.2 to 5% by weight, or even from 0.3 to 2% by weight.

[0122] More preferably still, the composition according to the invention comprises coco caprate, coco caprylate, and mixtures thereof, better still coco caprylate / caprate (INCI name), in a total amount ranging from 0.05 to 15% by weight, better still from 0.1 to 10% by weight, even better still from 0.2 to 8% by weight, even better still from 0.2 to 5% by weight, or even from 0.3 to 2% by weight.

[0123] In another preferred embodiment, the composition according to the invention comprises isoamyl laurate and cetyl esters (INCI name), alone or as a mixture, more preferably as a mixture, in a total amount ranging from 0.05 to 15% by weight, better still from 0.1 to 10% by weight, even better still from 0.2 to 8% by weight, even better still from 0.2 to 5% by weight, or even from 0.3 to 2% by weight. Polyols

[0124] The composition according to the invention may optionally comprise one or more polyols.

[0125] The polyol(s) present in the composition of the invention are preferably chosen from the polyols of the following formula (F): RL Rh ----C----- [to]--C---8- 4 1 LJ m 1 OH OH

[0126] formula (F) in which:

[0127] - R'i, R'2, R'3 and R'4, identical or different, independently designate one of the other a hydrogen atom, a linear or branched alkyl radical, C1 to C6 or a mono or polyhydroxyalkyl radical, C1 to C6,

[0128] - A denotes an alkyl radical, saturated or unsaturated, linear or branched containing 1 with 18 carbon atoms, this radical includes from 0 to 9 oxygen atoms, but no hydroxyl group, and

[0129] - m denotes 0 or 1.

[0130] The polyol(s) are preferably chosen from polyols of formula (F), in which m is 0, and mixtures thereof, and more preferably from propylene glycol (propane-1,2-diol), caprylyl glycol (1,2-octanediol), 1,2,3-propanetriol, pinacol (2,3-dimethyl 2,3-butanediol), 1,2,3-butanetriol, 2,3-butanediol, glycerin, sorbitol and mixtures thereof.

[0131] The polyol(s) may also be chosen from polyols of formula (F), in which m is 1 and R'b R'2, R'3, and R'4, identical or different, denote, independently of one another, a hydrogen atom or a C1 to C6 alkyl radical, and mixtures thereof. They may advantageously be chosen from polyethylene glycols and mixtures thereof, and more particularly the product named PEG-6 or PEG-8 in the CTFA (International Cosmetic Ingredient Dictionary, Seventh Edition) work.

[0132] The polyol(s) may also be chosen from polyols of formula (F), in which m is 1 and R'b R'2, R'3, and R'4, identical or different, denote, independently of one another, a hydrogen atom or a C1 to C6 alkyl radical, and whose molecular weight is less than 200, and mixtures thereof. According to this particular embodiment, the polyol(s) are preferably chosen from 3-methyl-1,3,5-pentanetriol, 1,2,4-butanetriol, 1,5-pentanediol, 2-methyl-1,3-propanediol, 1,3-butanediol, 3-methyl-1,5-pentanediol, neopentyl glycol (2,2-dimethyl-1,3-propanediol), isoprene glycol (3-methyl-1,3-butanediol), hexylene glycol (2-methyl-2,4-pentanediol) and mixtures thereof, and more preferably from hexylene glycol, neopentyl glycol, 3-methyl-1,5-pentanediol and mixtures thereof.

[0133] Preferably, the molecular weight (MW) of said polyol(s) present in the composition of the invention is between 50 and 350, more preferably between 60 and 200, and better still between 70 and 150.

[0134] Preferably, when they are present in the composition, the polyol(s) are chosen from diols, glycerin, and mixtures thereof, more preferably from compounds of formula (F) in which, R'b R'2, R'3 and R'4, identical or different, independently denote a hydrogen atom or a C1 to C6 alkyl radical, glycerin and mixtures thereof.

[0135] Advantageously, the polyol(s) are chosen from glycerin, propylene glycol (propane-1,2-diol), caprylyl glycol (1,2-octanediol), pinacol (2,3-dimethyl-2,3-butanediol), 2,3-butanediol, polyethylene glycols, 1,5-pentanediol, 2-methyl-1,3-propanediol, 1,3-butanediol, 3-methyl-1,5-pentanediol, neopentyl glycol (2,2-dimethyl-1,3-propanediol), isoprene glycol (3-methyl-1,3-butanediol), hexylene glycol (2-methyl-2,4-pentanediol), dipropylene glycol, and mixtures thereof. Preferably, the polyol is glycerin, propylene glycol or dipropylene glycol, and mixtures thereof, more preferably, the polyol is glycerin. The total content of the polyol(s), when present, preferably ranges from 0.1 to 30% by weight, more preferably from 10 to 25% by weight, and better still from 12 to 20% by weight, relative to the total weight of the composition. Cationic polymers

[0136] The compositions according to the invention are free of cationic polymers.

[0137] The term “cationic polymer” means any non-silicone polymer containing cationic groups and / or groups which can be ionized into cationic groups, and not containing anionic groups and / or groups which can be ionized into anionic groups. Silicones

[0138] The compositions according to the invention are free of silicones.

[0139] The term “silicones” means amino silicones, non-amino silicones, and their mixtures. Non-amino silicones can be solid or liquid, volatile or non-volatile. Susceptible non-amino silicones can also be soluble or insoluble and exist as oil, wax, resin, or gum. Silicones are notably described in detail in Walter NOLL's book "Chemistry and Technology of Silicones" (1968), Academie Press. Cationic surfactants

[0140] The compositions according to the invention are free from cationic surfactants other than fatty amines. Other ingredients

[0141] According to one embodiment, the composition according to the invention may be anhydrous.

[0142] The term "anhydrous" means that the composition comprises at most 5% by weight of water, relative to the total weight of the composition, preferably at most 3% by weight of water, better still at most 2% by weight of water, even better still at most 1% by weight of water, and preferably is free of water (0%).

[0143] According to another embodiment of the invention, the composition may be an aqueous composition. When it comprises water, the composition according to the invention may have a water content ranging from 50 to 98% by weight, preferably ranging from 60 to 95% by weight, better still ranging from 70 to 93% by weight, relative to the total weight of the composition.

[0144] Preferably, the composition according to the invention is aqueous.

[0145] The composition according to the invention may also comprise one or more additional compounds, different from the compounds previously described, chosen from thickeners or viscosity regulators, natural or synthetic, UV filters, fillers such as nacres, titanium dioxide, resins and clays, perfumes, peptizers, vitamins, acidic agents, alkaline agents, coloring materials, pearlescent agents, opacifying agents, film-forming polymers, fixing polymers, solid fatty substances other than solid fatty alcohols, antioxidant agents, and preservatives.

[0146] A person skilled in the art will take care to choose any additional compounds and their quantity so that they do not harm the properties of the composition of the present invention,

[0147] These additives may be present in the composition according to the invention in an amount ranging from 0 to 20% by weight relative to the total weight of the composition.

[0148] According to a preferred embodiment of the invention, the cosmetic composition, preferably hair composition, comprises: i. at least one oligomer of a hydroxylated fatty acid triglyceride and a saturated diacid, preferably hydrogenated castor oil and sebacic acid, more particularly the compound with the INCI name "hydrogenated castor oil / sebacic acid copolymer", preferably in an amount ranging from 0.1% to 10% by weight, preferably from 0.2% to 5% by weight, and more preferably from 0.2% to 2% by weight, relative to the total weight of the composition; ii. at least one solid fatty alcohol, preferably selected from cetyl alcohol, stearyl alcohol, and mixtures thereof, preferably in an amount ranging from 0.1 to 20% by weight, preferably from 1 to 10% by weight, and more preferably from 1 to 5% by weight, relative to the total weight of the composition; and iii. at least one vegetable protein hydrolyzate, preferably a soy protein hydrolyzate, in an amount ranging from 0.01 to 10% by weight, preferably from 0.05 to 5% by weight, more preferably from 0.08 to 1% by weight relative to the total weight of the composition according to the invention,

[0149] it being understood that the weight ratio between said oligomer(s) and the plant protein hydrolysate(s) is greater than or equal to 1,

[0150] said composition being free of cationic polymers, silicones and cationic surfactants other than fatty amines.

[0151] In another preferred embodiment, the cosmetic composition, preferably hair composition, further comprises: i. at least one fatty amine, preferably a fatty amidoamine, more preferably stearamidopropyl dimethylamine, preferably in a total amount ranging from 0.1 to 10% by weight, better still from 0.25 to 5% by weight, or even from 0.5 to 2.5% by weight, relative to the total weight of the composition; and / or ii. at least one fatty ester, preferably chosen from coco caprylate / caprate (INCI name), isoamyl laurate, cetyl esters (INCI name) and mixtures thereof, more preferably coco caprylate / caprate (INCI name) or a mixture of isoamyl laurate and cetyl esters (INCI name), preferably in a total amount ranging from 0.05 to 15% by weight, better still from 0.1 to 10% by weight, even better still from 0.2 to 8% by weight, even better still from 0.2 to 5% by weight, or even from 0.3 to 2% by weight, relative to the total weight of the composition; and / or iii. at least one polyol, preferably glycerin, preferably in an amount ranging from 0.1 to 30% by weight, more preferably from 10 to 25% by weight, and even better still from 12 to 20% by weight, relative to the total weight of the composition.

[0152] When the composition is aqueous, the pH of the composition according to the invention generally varies from 2 to 12, preferably from 2.5 to 9, preferentially from 3 to 8, better still from 3.5 to 7, and even better still from 3.5 to 5.

[0153] The pH of the composition can be adjusted to the desired value by means of alkalizing agents or acidifying agents commonly used. Among the alkalizing agents, mention may be made, by way of examples, of ammonia, alkanolamines, mineral or organic hydroxides. Among the acidifying agents, mention may be made, by way of examples, of mineral or organic acids such as hydrochloric acid, orthophosphoric acid, sulfuric acid, carboxylic acids such as, for example, acetic acid, tartaric acid, citric acid, lactic acid, sulfonic acids.

[0154] The hair care compositions according to the invention may be, for example, conditioning shampoos, conditioners, masks, serums and leave-in treatments.

[0155] The cosmetic composition may therefore be rinsed or not after having been applied to the keratin fibers, for example with water after a possible application time. Preferably, the composition is not rinsed.

[0156] The invention also relates to a process for the cosmetic treatment of keratin fibers, in particular human keratin fibers such as hair, comprising the application to said keratin fibers of a composition as defined above.

[0157] The cosmetic composition according to the invention can be applied to dry or wet keratin fibers, preferably wet, having possibly previously been washed with a shampoo.

[0158] In a preferred embodiment, the cosmetic composition is applied to wet keratin fibers, previously washed with a shampoo, rinsed, then optionally treated with a rinse-off treatment before applying the composition (C) according to the invention.

[0159] Preferably, the application of the composition according to the invention is not followed by rinsing.

[0160] The method according to the invention is in particular a hair treatment method, which makes it possible to repair and smooth the hair. The hair thus treated has improved cosmetic properties in terms of discipline, smoothness to the touch and visual smoothness, softening at the time of application, detangling, flexibility, individualization of the hair and coating, more particularly still in terms of softening at the time of application, detangling, smoothness to the touch and coating.

[0161] The following examples serve to illustrate the invention without, however, being limiting in nature. EXAMPLES Example 1

[0162] The composition Al according to the invention was prepared from the ingredients indicated in the following table. The quantities indicated are expressed in % by weight of active material relative to the total weight of the formula.

[0163] [Tables 1] Composition Al according to the invention Cetyl alcohol 3 Hydrogenated castor oil / sebacic acid copolymer (INCI no.) 0.5 Vegetable protein hydrolyzate 0.1 Stearamidopropyl dimethylamine 1.2 Coco caprylate / caprate (INCI name) 0.7 Lactic acid 0.3 Glycerin 17.5 Preservatives QS Perfume 0.8 Water QS 100

[0164] Composition Al was applied to damaged hair. It is observed that the treated hair generally has good cosmetic properties in terms of discipline, smoothness to the touch and visual smoothness, softening at the time of application, detangling, flexibility, individualization of the hair and coating. Example 2

[0165] A formula A according to the invention and a comparative formula B are prepared from the ingredients indicated in the following tables. The quantities indicated are expressed as % by weight of active ingredient relative to the total weight of the formula.

[0166] [Tables2] Composition A Invention B Comparison Stearyl alcohol 2.75 0 Oleyl alcohol 0 2.75 Cetyl esters (INCI name) 0.45 0.45 Isoamyl laurate 1.2 1.2 Stearamidopropyl dimethylamine 1.4 1.4 Vegetable protein hydrolysate e 0.11 0.11 Hydrogenated castor oil / sebacic acid copolymer (INCI name) 0.5 0.5 Sunflower seed oil 0.6 0.6 Tartaric acid 0.23 0.23 Preservatives QS QS Perfume 1 1 Water QS 100 QS 100

[0167] Trained experts observed the effects of the composition according to the invention on damp hair immediately after application, and on dry hair.

[0168] Application protocol

[0169] Compositions A and B are applied to highly sensitized strands of damp hair at a rate of 0.055g / g of hair. The strands of hair had been previously washed with an Elseve Total repair 5 shampoo (0.3g / g of hair), then rinsed and treated with the Elseve Total repair 5 rinse-off conditioner (0.5g / g of hair).

[0170] Evaluation protocol

[0171] The strands of damp hair are evaluated by 3 experts and rated on the criteria of transformation, detangling, smoothness to the touch and coating. The strands are then dried with a hairdryer and evaluated on the criteria of smoothness to the touch and coating. The evaluation gestures used are as follows: - for detangling: the expert slides the comb through the hair from root to tip. The sooner the comb gets stuck, the more difficult it will be to detangle the strand; - for smooth touch: the smoothness assessment is tactile, the expert takes a lock of hair at the root and slides it to the tips (to be repeated in several places on the lock). The expert assesses whether the hair is uniform, homogeneous from root to tip, whether it has no roughness, whether it does not catch the fingers; - for coating: the expert takes the strand in his hand and slides his three fingers from the root to the tip in rotations. The expert assesses the amount of deposit.

[0172] Protocol for visual evaluation of the stability of formulas

[0173] In parallel, the stability of formulas A and B is evaluated after 24 hours at room temperature.

[0174] Results

[0175] The notes and results below were obtained according to the protocols described above.

[0176] Stability performance (24H at room temperature)

[0177] [Tables3] A Invention B Comparison Stability (T=25°C) Stable Phase shift after 24 hours

[0178] “Hair transformation” performance when applied to damp hair

[0179] [Tables4] A invention B comparative 3.5 2

[0180] Detangling performance on wet hair

[0181] Rating: The disentangling criterion is rated from 0 to 5, with 5 being the highest rating, meaning the best disentangling performance, and 0 being the lowest rating.

[0182] [Tables5] A invention B comparative 3 2

[0183] Smooth touch performance on wet and dry hair evaluated by 3 experts

[0184] [Tableauxô] Wet hair Dry hair A invention B comparison A invention B comparison Expert 1 4 2.5 3 2.5 Expert 2 4 3 3 1 Expert 3 4 2 3 2 Average 4 2.50 3 1.83

[0185] Coating performance on wet hair evaluated by 3 experts

[0186] [Tables?] A invention B comparative Expert 1 4 2.5 Expert 2 4 2 Expert 3 4 2.5 Average 4 2.33

[0187] Conclusion

[0188] Composition A according to the invention leads to improved processing, disentangling, smoothness to the touch and coating performances compared to composition B. In addition, it leads to better stability.< / c>

Claims

Claims

1.

2. Composition (C) comprising: i. at least one oligomer of a hydroxylated fatty acid triglyceride and a saturated dibasic acid; ii. at least one solid fatty alcohol; iii. at least one vegetable protein hydrolysate; and iv. optionally at least one fatty amine, it being understood that the weight ratio between said oligomer(s) and the vegetable protein hydrolysate(s) is greater than or equal to 1, said composition being free of cationic polymers, silicones and cationic surfactants other than fatty amines. Composition (C) according to claim 1 in which the hydroxylated fatty acid triglyceride is represented by the following formula (A): | R2 R2 R2 | CHOH CHOH CHOH | he laughed laughed Q c C o c 9 CH. — CH ■—; CH ï. (HAS) in which: - Ri represents a saturated or unsaturated, linear or branched alkylene group, comprising for example from 1 to 20 carbon atoms, preferably represents the group -(CH2)i-, where “1” can vary from 1 to 20, and preferably from 3 to 16, better still from 6 to 12, - R2 represents a saturated or unsaturated, linear or branched alkyl group, comprising for example from 1 to 12 carbon atoms, preferably represents the group -(CH2)m-CH3, where “m” can vary from 0 to 11, and preferably from 2 to 11, better still from 3 to 9, and the saturated diacid is represented by the following formula (B): in which: - Xi represents a linear or branched alkylene group, preferably represents the linear alkylene group -(CH2 )x-, where “x” is an integer ranging from 1 to 30, and preferably from 3 to 15.

3. Composition (C) according to claim 2 in which the oligomer of a hydroxylated fatty acid triglyceride and of a saturated diacid is a hydrogenated castor oil / sebacic acid copolymer, more particularly the compound with the INCI name “hydrogenated castor oil / sebacic acid copolymer”.

4. Composition (C) according to one of claims 1 to 3 in which the total quantity of oligomer(s) of a triglyceride of a hydroxylated fatty acid and of a saturated diacid ranges from 0.1% to 10% by weight, preferably from 0.2% to 5% by weight, and more preferably from 0.2% to 2% by weight, relative to the total weight of the composition.

5. Composition (C) according to one of claims 1 to 4 in which the solid fatty alcohol is chosen from cetyl alcohol, stearyl alcohol, behenyl alcohol, myristic alcohol, and mixtures thereof, more preferably still from cetyl alcohol, stearyl alcohol, and mixtures thereof.

6. Composition (C) according to one of claims 1 to 5 in which the total quantity of solid fatty alcohol(s) ranges from 0.1 to 20% by weight, preferably from 1 to 10% by weight, and more preferably from 1 to 5% by weight, relative to the total weight of the composition.

7. Composition (C) according to one of claims 1 to 6 in which the vegetable protein hydrolyzate is derived from a protein chosen from pea protein, soy protein, wheat protein, corn protein, rice protein, sweet almond protein, and mixtures thereof, more preferably a soy protein hydrolyzate or a rice protein hydrolyzate or a mixture of the two, better still a soy protein hydrolyzate.

8. Composition (C) according to one of claims 1 to 7 in which the total quantity of hydrolyzate(s) of vegetable protein(s) ranges from 0.01 to 10% by weight, preferably from 0.05 to 5% by weight, more preferably from 0.08 to 1% by weight relative to the total weight of the composition.

9. Composition (C) according to one of claims 1 to 8 further comprising at least one fatty amine, preferably a fatty amidoamine.

10. Composition (C) according to claim 9 in which the fatty amine is a fatty amidoamine chosen from oleamidopropyl dimethylamine, stearamidopropyl dimethylamine and brassicamidopropyl dimethylamine, more preferably stearamidopropyl dimethylamine.

11. Composition (C) according to one of claims 9 or 10 in which the fatty amine(s) are present in a total amount ranging from 0.1 to 10% by weight, better still from 0.25 to 5% by weight, or even from 0.5 to 2.5% by weight, relative to the total weight of the composition.

12. Composition (C) according to one of claims 1 to 11 further comprising one or more fatty esters, preferably chosen from coco caprylate / caprate (INCI name), isoamyl laurate, cetyl esters (INCI name) and mixtures thereof, preferentially from coco caprylate / caprate (INCI name) and a mixture of isoamyl laurate and cetyl esters (INCI name).

13. Composition (C) according to claim 12 in which the total quantity of fatty ester(s) ranges from 0.05 to 15% by weight, better still from 0.1 to 10% by weight, even better still from 0.2 to 8% by weight, even better still 0.2 to 5% by weight, or even 0.3 to 2% by weight relative to the total weight of the composition.

14. Composition (C) according to one of claims 1 to 13 further comprising at least one polyol preferably chosen from glycerin, propylene glycol and dipropylene glycol, more preferably still glycerin.

15. Composition (C) according to claim 14 in which the total quantity of polyol(s) ranges from 0.1 to 30% by weight, more preferably from 10 to 25% by weight, and better still from 12 to 20% by weight, relative to the total weight of the composition.

16. Process for the cosmetic treatment of keratin fibers, in particular human keratin fibers such as hair,

17.

18.

19. comprising the application to said keratin fibers of a composition as defined in one of claims 1 to 15. Treatment method according to claim 16 in which the keratin fibers are previously washed with a shampoo, rinsed, then optionally treated with a rinse-off treatment before the application of the composition (C). Treatment method according to claim 16 or 17 in which the composition (C) is not rinsed after application. Use of a composition (C) according to one of claims 1 to 15, for the treatment of keratin fibers, and more particularly for the repair and smoothing of hair.