COMPOSITION COMPRISING A FATTY AMINE, A FATTY ESTER, A POLYOL AND A FATTY ALCOHOL WITH A POLYOL / FATTY AMINE WEIGHT RATIO GREATER THAN OR EQUAL TO 5

Abstract

COMPOSITION COMPRISING A FATTY AMINE, A FATTY ESTER, A POLYOL AND A FATTY ALCOHOL WITH A POLYOL / FATTY AMINE WEIGHT RATIO GREATER THAN OR EQUAL TO 5 The present invention relates to a composition, in particular a cosmetic composition, comprising a fatty amine, a fatty ester, a polyol, and a fatty alcohol, it being understood that the weight ratio between the polyol(s) and the fatty amine(s) is greater than or equal to 5. 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 A FATTY AMINE, A FATTY ESTER, A POLYOL AND A FATTY ALCOHOL WITH A POLYOL / FATTY AMINE WEIGHT RATIO GREATER THAN OR EQUAL TO 5 Technical field of the invention

[0001] The present invention relates to a composition comprising a fatty amine, a fatty ester, a polyol and a fatty alcohol with a polyol / fatty amine weight ratio greater than or equal to 5. 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 the keratin fibers by repairing the cuticles and sealing the split ends where appropriate. In particular, there is a need to restore the axial cohesion of the ends in order to allow the keratin fibers to be realigned (discipline), and to give damaged hair a smoother feel and appearance, suppleness, to facilitate their detangling and individualization. (also called hairline), and this in a lasting way.

[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. 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 fatty amine; ii. at least one fatty ester; iii. at least one polyol; and iv. at least one fatty alcohol,

[0008] it being understood that the weight ratio between the polyol(s) and the fatty amine(s) is greater than or equal to 5.

[0009] Preferably, the compositions according to the invention are free of silicones, cationic polymers 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 and allows good individualization of the hair. Advantageously, it is observed that the cosmetic properties conferred by the compositions according to the invention are long-lasting in that they persist after shampooing.

[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 for it; the expression "between" is equivalent to the expression "ranging from" and may be substituted for it, 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. Fatty amines

[0019] Composition (C) according to the present invention comprises at least one fatty amine.

[0020] 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.

[0021] Preferably, the fatty amines according to the invention are not (poly)oxyalkylenated.

[0022] 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.

[0023] The term “amidoamine” means a compound comprising at least one amide function and at least one primary, secondary or tertiary amine function, optionally (poly)oxyalkylenated, or their salts.

[0024] The term "fatty amidoamine" means an amidoamine comprising at least one C6-C30 hydrocarbon chain. 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).

[0025] As fatty amidoamines, mention may be made of fatty amidoamines in which the C6-C30 fatty chain can be carried by the amine group or by the amido group.

[0026] Preferably, the fatty amidoamines according to the invention are not (poly)oxyalkylenated.

[0027] Among the amidoamines capable of being used in the context of the invention, can cite amidoamines of formula (Al): RCONHR”N(R')2 (Al)

[0028] in which:

[0029] - 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;

[0030] - R' ' represents a divalent hydrocarbon radical, preferably linear, having 1 to 6 carbon atoms, preferably 2 to 4 carbon atoms; more preferably 3 carbon atoms; and

[0031] - 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.

[0032] Preferably, in formula (Al):

[0033] - R' are identical and represent a methyl group;

[0034] - R' ' represents a linear divalent hydrocarbon radical, having 2 to 4 atoms of carbon; better 3 carbon atoms and

[0035] - R represents a linear or branched hydrocarbon radical, saturated or comprising a unsaturation (C=C), in C7-C23.

[0036] The amidoamines of formula (Al) can be chosen, alone or in a mixture, from the following compounds:

[0037] 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.

[0038] Preferably, the fatty amidoamines are chosen from oleamidopropyl dimethylamine, stearamidopropyl dimethylamine, brassicamidopropyl dimethylamine and mixtures thereof.

[0039] As fatty amines, mention may also be made of tertiary fatty amines, and in particular tertiary fatty amines of formula (A2): RN(R')2 in which: - R represents a monovalent hydrocarbon radical having from 6 to 30 carbon atoms, preferably from 8 to 24 carbon atoms, and in particular a linear or branched, saturated or unsaturated C6-C30, preferably C8-C24 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 - 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.

[0040] The following compounds may be mentioned as fatty amines corresponding to formula (A2): dimethyllauramine, dimethylbehenamine, dimethylcocamine, dimethylmyristamine, dimethylpalmitamine, dimethylstearamine, dimethyltallowamine, dimethylsoyamine, and mixtures thereof.

[0041] Preferably, the fatty amines according to the invention are fatty amidoamines.

[0042] In a preferred embodiment, the composition according to the invention comprises one or more fatty amidoamines corresponding to the formula (A1) 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.

[0043] Preferably, the total amount of fatty amines, preferably fatty amidoamines of formula (A1) as defined above, ranges 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.

[0044] More particularly, 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.

[0045] 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

[0046] The composition (C) according to the present invention comprises 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).

[0047] Liquid fatty esters

[0048] 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 carbon atoms of the esters being greater than or equal to 8, more advantageously greater than or equal to 10.

[0049] For the monoalcohol esters, at least one of the alcohol or acid from which the esters of the invention are derived may be branched.

[0050] 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 myristate, 2-octyldodecyl myristate; isobutyl stearate; 2-hexyldecyl laurate, coco caprylate, coco caprate, and mixtures thereof.

[0051] 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.

[0052] 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.

[0053] 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 diisanonate; polyethylene glycol distearates, and mixtures thereof.

[0054] The composition may also comprise, as fatty ester, esters and diesters of sugars of C6 to C30 fatty acids, preferably 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 may be monosaccharides, oligosaccharides or polysaccharides.

[0055] 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.

[0056] 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.

[0057] The esters according to this variant can also be chosen from mono-, di-, tri- and tetra-esters, polyesters and their mixtures.

[0058] 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.

[0059] 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.

[0060] An example of this is the product sold under the name Glucate® DO by the company Amerchol, which is a methylglucose dioleate.

[0061] Preferably, at least one liquid fatty ester of monoacid and monoalcohol will be used.

[0062] Solid fatty esters

[0063] 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.

[0064] 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 saturated monoalcohol, linear or branched, 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.

[0065] 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 alcohols

[0066] di-, tri-, tetra- or pentahydroxylated C2-C26.

[0067] 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 (in particular myristyl stearate, cetyl stearate and stearyl stearate), octyl pelargonate, C9-C26 alkyl myristates (in particular cetyl myristate, myristyl myristate and stearyl myristate), diethyl sebacate, sebacate of diisopropyl, diisopropyl adipate, di n-propyl adipate, dioctyl adipate, dioctyl maleate, octyl palmitate, C9-C26 alkyl palmitates (including myristyl palmitate, cetyl palmitate, and stearyl palmitate), and mixtures thereof. More specifically, compounds with the INCI name “cetyl esters” may be mentioned.

[0068] 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.

[0069] In another embodiment, the esters with the INCI name “cetyl esters” and isoamyl laurate, alone or in a mixture, can be used.

[0070] In the cosmetic composition according to the invention, the total content of fatty ester(s) 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 0.2 to 5% by weight, or even 0.3 to 2% by weight, relative to the total weight of the composition.

[0071] Advantageously, the composition according to the invention comprises one or more esters 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 0.2 to 5% by weight, or even 0.3 to 2% by weight, relative to the total weight of the composition.

[0072] Preferably, 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 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 0.3 to 2% by weight.

[0073] 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.

[0074] In another alternative, when they are present in the composition according to the invention, the isoamyl laurate and the cetyl esters (INCI name), alone or as a mixture, are preferably present 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 0.2 to 5% by weight, or even 0.3 to 2% by weight. Polyol

[0075] The composition according to the invention further comprises one or more polyols.

[0076] The polyol(s) present in the composition of the invention are preferably chosen from the polyols of formula (B) following: R% r, (B) Rh --C---- [A] --C---¾ 1 LJ m 1 OH OH

[0077] formula (B) in which:

[0078] - 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,

[0079] - A denotes an alkyl radical, saturated or unsaturated, linear or branched containing from 1 to 18 carbon atoms, this radical includes from 0 to 9 oxygen atoms, but no hydroxyl group, and

[0080] - m denotes 0 or 1.

[0081] The polyol(s) are preferably chosen from polyols of formula (B), 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.

[0082] The polyol(s) may also be chosen from polyols of formula (B), in which m is 1 and R'b R'2, R'3, and R'4, which may be 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.

[0083] The polyol(s) may also be chosen from the polyols of formula (B), 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.

[0084] Preferably, the molecular weight (MW) of the 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.

[0085] Preferably, the polyol(s) are chosen from diols, glycerin, and mixtures thereof, more preferably from compounds of formula (B) in which R\, R'2, R'3 and R'4, identical or different, independently of one another denote a hydrogen atom or a C1 to C6 alkyl radical, glycerin and mixtures thereof.

[0086] 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.

[0087] In the cosmetic composition according to the invention, the total content of the polyol(s) 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.

[0088] Preferably, the composition according to the invention comprises glycerin in a total amount ranging 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. Fatty alcohols

[0089] Composition (C) according to the invention further comprises one or more fatty alcohols different from the polyols previously described.

[0090] 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, comprising 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.

[0091] The fatty alcohols according to the invention can be chosen from solid fatty alcohols, liquid fatty alcohols, and their mixtures.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] Preferably, the solid fatty alcohol(s) are chosen from cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, and mixtures thereof, more preferably cetyl alcohol, stearyl alcohol and mixtures thereof such as cetearyl alcohol, and even more preferably cetyl alcohol.

[0098] By “liquid” is meant a liquid compound at a temperature of 25°C and at atmospheric pressure (760 mm Hg or 1,013.105 Pa).

[0099] The liquid fatty alcohols according to the invention are chosen from saturated alcohols or unsaturated, linear or branched, containing from 8 to 30 carbon atoms, preferably from 12 to 24 carbon atoms, better still from 14 to 22 carbon atoms.

[0100] The liquid fatty alcohols that can be used can be chosen from, alone or as a mixture, oleyl alcohol, linoleyl alcohol, linolenic alcohol, isocetyl alcohol, isostearyl alcohol, 2-octyl-l-dodecanol, 2-butyl-octanol, 2-hexyl-l-decanol, 2-decyl-l-tetradecanol, 2-tetradecyl-l-cetanol, and mixtures thereof.

[0101] Advantageously, the total quantity of the solid or liquid 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.

[0102] Preferably, the composition according to the invention comprises one or more solid fatty alcohol(s), more preferably still chosen from cetyl alcohol, stearyl alcohol and their mixtures such as cetearyl alcohol, better still the solid fatty alcohol is cetyl alcohol.

[0103] 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.

[0104] 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.

[0105] Oligomer of a hydroxylated fatty acid triglyceride and a saturated dibasic acid

[0106] The composition (C) according to the present invention may optionally comprise one or more oligomer(s) 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.

[0107] Preferably, the composition (C) according to the present invention comprises one or more oligomers of a hydroxylated fatty acid triglyceride and of a saturated diacid.

[0108] 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.

[0109] 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.

[0110] 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 double bond or a carbon-carbon triple bond. The term "diacid" here designates a hydrocarbon compound containing two carboxyl functions -COOH. The composition according to the invention may comprise a single diacid or a mixture of several different diacids.

[0111] Similarly, within the meaning of the present invention, the oligomer may be a mixture of several different oligomers.

[0112] 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.

[0113] More particularly, the oligomer may be an oligoester whose monomers are represented by the following formulas (C) of triglyceride and (D) of diacid: (D)

[0114] in which:

[0115] 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,

[0116] 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

[0117] 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 preference from 3 to 15.

[0118] According to a preferred embodiment, 1=10 and m=5, and the group OH ™~R1--C--R2 H

[0119] in formula (C) above represents the alkyl residue of 12-hydroxy stearic acid (the major component of hydrogenated castor oil).

[0120] When the diacid is sebacic acid, Xi represents the linear alkylene group -(CH2)X-, where "x" is equal to 8.

[0121] The average degree of polymerization of the oligomer can vary between 3 and 12, preferably between 4 and 10.

[0122] Thus, the oligomer of a triglyceride of a hydroxylated fatty acid and a saturated diacid can be represented by the following formula (E):

[0123] in which

[0124] each of Rb R2 and Xia the meaning explained above, and

[0125] n means an average degree of polymerization between 3 and 12, preferably between 4 and 10.

[0126] It is preferable that the following group: Ç (H) — R1—CH-R2

[0127] in formula (E) above represents the alkyl residue of 12-hydroxystearic acid, and that Xi represents -(CH2 )8 -.

[0128] It is preferable that the oligomer of a triglyceride of a hydroxylated 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.

[0129] A compound with the INCI name “hydrogenated castor oil / sebacic acid copolymer” will preferably be used.

[0130] Such compounds are notably sold by the company CRODA under the trade names CROMADOL CWS-5, CROMADOL CWS-10, CRODABOND CSA.

[0131] The oligomer(s) of a triglyceride of a hydroxylated fatty acid and 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.

[0132] 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.

[0133] 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. Vegetable protein hydrolyzate

[0134] The composition according to the invention may optionally comprise one or more plant protein hydrolysates.

[0135] 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.

[0136] Preferably, the protein(s) is(are) chosen from pea protein, soy protein, wheat protein, corn protein, rice protein, sweet almond protein, and mixtures thereof.

[0137] 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.

[0138] Preferably, the composition according to the invention comprises one or more hydrolysates of plant protein(s).

[0139] Advantageously, the total quantity of the plant 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. Cationic polymers

[0140] In a preferred embodiment, the compositions according to the invention are free of cationic polymers.

[0141] 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

[0142] In a preferred embodiment, the compositions according to the invention are free of silicones.

[0143] "Silicones" means amino silicones, non-amino silicones, and mixtures thereof. Non-amino silicones may be solid or liquid, volatile or non-volatile. Non-amino silicones may also be soluble or insoluble and may be in the form of oil, wax, resin, or gum. Silicones are described in detail in Walter NOLL's book "Chemistry and Technology of Silicones" (1968), Academie Press. Cationic surfactants

[0144] In a preferred embodiment, the compositions according to the invention are free of cationic surfactants other than fatty amidoamines. Other ingredients

[0145] According to one embodiment, the composition according to the invention may be anhydrous.

[0146] 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%).

[0147] 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.

[0148] Preferably, the composition according to the invention is aqueous.

[0149] 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, antioxidant agents, and preservatives.

[0150] 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.

[0151] 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.

[0152] Advantageously, the weight ratio between the polyol(s) and the fatty amine(s) ranges from 5 to 30.

[0153] Preferably, the weight ratio between the polyol(s) and the fatty amine(s) is greater than or equal to 10, better still from 10 to 30, even better still from 10 to 20.

[0154] According to a preferred embodiment of the invention, the cosmetic composition, preferably hair composition, 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; ii. at least one fatty ester, preferably coco caprylate / caprate (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 0.2 to 5% by weight, or even 0.3 to 2% by weight; 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 better still from 12 to 20% by weight, relative to the total weight of the composition; and iv. at least one fatty alcohol, preferably chosen from solid fatty alcohols, preferentially chosen from cetyl alcohol, stearyl alcohol and their mixtures, better still cetyl alcohol, preferably in a total 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;

[0155] it being understood that the weight ratio between the polyol(s) and the fatty amidoamine(s) is greater than or equal to 5, preferably greater than 10, said composition being preferably free of cationic polymers, silicones and cationic surfactants other than fatty amidoamines.

[0156] In another preferred embodiment, the cosmetic composition, preferably hair composition, further comprises: i. at least one oligomer of a hydroxylated fatty acid triglyceride and a saturated dibasic acid, 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; and / or ii. at least one vegetable protein hydrolyzate, preferably soy protein hydrolyzate, preferably 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.

[0157] 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, and better still from 3.5 to 7, and even better still from 3.5 to 5.

[0158] The pH of the composition can be adjusted to the desired value by means of alkalinizing agents or acidifying agents commonly used. Among the alkalinizing 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.

[0159] The hair care compositions according to the invention may be, for example, conditioning shampoos, conditioners, masks, serums and leave-in treatments.

[0160] 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.

[0161] 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.

[0162] 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.

[0163] 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).

[0164] Preferably, the application of the composition according to the invention is not followed by rinsing.

[0165] The method according to the invention is in particular a hair treatment method, which helps repair and smooth hair. Hair treated in this way has improved cosmetic properties in terms of discipline, smoothness to the touch and visual smoothness, softening upon application, detangling, flexibility, hair individualization and coating, more particularly in terms of detangling, smoothness to the touch and hair individualization.

[0166] The following examples serve to illustrate the invention without, however, being limiting in nature. EXAMPLES Example 1

[0167] 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.

[0168] [Tables 1] Composition Al according to the invention Cetyl alcohol 3 Hydrogenated castor oil / sebacic acid copolymer (INCI name) 0.5 Vegetable protein hydrolyzate 0.1 Stearamidopropyl dimethylamine 1.2 Coco caprylate / caprate 0.7 Lactic acid 0.3 Glycerin 17.5 Preservatives QS Perfume 0.8 Water QS 100

[0169] 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

[0170] Two formulas (A and B) according to the invention, and a comparative formula C, are prepared from the ingredients indicated in the following table. The quantities indicated are expressed in % by weight of active ingredient relative to the total weight of the formula.

[0171] [Tables2] Composition A (invention) B (invention) C (comparative) Cetyl alcohol 3 3 3 Stearamidopropyl dimethylamine 1.2 1.2 1.2 Glycerin 15.6 8.4 3.6 Coco caprylate / caprate 0.7 0.7 0.7 Hydrogenated castor oil / sebacic acid copolymer (INCI name) 0.5 0.5 0.5 Vegetable protein hydrolysate 0.1 0.1 0.1 Lactic acid 0.3 0.3 0.3 Preservatives QS QS QS Perfume 0.8 0.8 0.8 Water QS 100 QS 100 QS 100 Polyol / Amidoamine Ratio Fatty Acid 13 7 3

[0172] Protocol

[0173] Formulas A, B and C are applied to strands of damp hair sensitized at a rate of 0.055g / g of hair. The strands of hair had been previously washed with an Elsève Total Repair 5 shampoo (0.3g / g of hair), then rinsed and treated using a rinse-off treatment (Elsève Total Repair 5 conditioner) (0.5g / g of hair).

[0174] The strands of damp hair are evaluated by 3 experts (sensory analysis) and rated on the criterion of smoothness to the touch. The strands are then dried with a hair dryer and evaluated on cosmetic criteria, and in particular hair individualization. This study evaluates the cosmetic performances of formulas A, B and C obtained on day 0 (D0).

[0175] The hair strands are then washed with Elsève Total Repair 5 shampoo (0.4g / g of hair). The hair strands are evaluated by 3 experts and rated on the criteria of detangling, smoothness to the touch and detangling. The strands are then dried with a hair dryer and evaluated on cosmetic criteria, and in particular smoothness to the touch and individualization of the hair. This study evaluates the persistence of the cosmetic performances of formulas A, B and C after 1 shampoo.

[0176] The different criteria are rated from 0 to 5, with 0 being associated with the lowest performance and 5 with the best performance.

[0177] Results

[0178] [Tables3] C (comparative) B (invention) A (invention) Average Average Average J0 Smooth wet touch 2.67 3.33 4.33 Dry smoothness 2.50 3.00 3.67

[0179] Compositions A and B according to the invention lead to performances in terms of smoothness to the touch on damp hair and detangling on dry hair that are higher than comparative composition C.

[0180] [Tables4] C (comparative) B (invention) A (invention) Average Average Average Remanence Detangling (scale from 0 to 5) 2.00 3.00 3.50 Smooth wet touch 0.50 1.50 1.83 Wet hairline 1.67 2.17 2.50 Smooth dry touch 2.00 2.33 3.50 Dry hairline 2.00 2.83 3.17

[0181] After 1 shampoo, compositions A and B according to the invention lead to higher scores on the criteria of detangling, smoothness to the touch and hairline than comparative composition C.

Claims

Claims

1. Composition (C) comprising: i. at least one fatty amine; ii. at least one fatty ester; iii. at least one polyol; and iv. at least one fatty alcohol, it being understood that the weight ratio between the polyol(s) and the fatty amine(s) is greater than or equal to 5.

2. Composition (C) according to claim 1 in which the fatty amine is a fatty amidoamine, preferentially chosen from oleamidopropyl dimethylamine, stearamidopropyl dimethylamine and brassicamidopropyl dimethylamine, more preferentially stearamidopropyl dimethylamine.

3. Composition (C) according to claim 1 or 2 in which the total amount of fatty amine ranges 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.

4. Composition (C) according to one of claims 1 to 3 in which the fatty ester is an ester 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, more preferably coco caprylate / caprate (INCI name).

5. Composition (C) according to one of claims 1 to 4 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.

6. Composition (C) according to one of claims 1 to 5 in which the polyol is chosen from glycerin, propylene glycol and dipropylene glycol, more preferably glycerin.

7. Composition (C) according to one of claims 1 to 6 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.

8. Composition (C) according to one of claims 1 to 7 in which

9.

10.

11.

12. the fatty alcohol is a solid fatty alcohol, preferably chosen from cetyl alcohol, stearyl alcohol and their mixtures such as cetearyl alcohol, and even more preferably cetyl alcohol. Composition (C) according to one of claims 1 to 8 in which the total quantity of the 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. Composition (C) according to one of claims 1 to 9 in which the weight ratio between the polyol(s) and the fatty amidoamine(s) is greater than or equal to 10, preferably between 10 and 30, preferentially between 10 and 20. Composition (C) according to one of claims 1 to 10 further comprising at least one oligomer of a hydroxylated fatty acid triglyceride and of a saturated diacid. Composition (C) according to claim 11 in which the hydroxylated fatty acid triglyceride is represented by the following formula (C): 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 (D): r fl fl ï 1 —OH । ~ (D) in which: - Xi represents a linear or branched alkylene group, preferably represents the linear alkylene group -(CH2)X-, where "x" is an integer from 1 to 30, and preferably from 3 to 15. ^Claim 13] Composition (C) according to claim 12 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".^Claim 14] Composition (C) according to one of claims 11 to 13 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. ^Claim 15] Composition (C) according to one of claims 1 to 14 further comprising at least one vegetable protein hydrolyzate, preferably 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.^Claim 16] Composition (C) according to claim 15 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. ^Claim 17] Composition (C) according to one of claims 1 to 16 which is. free from silicones, cationic polymers and cationic surfactants other than fatty amidoamines.

18. 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 in one of claims 1 to 17.

19. Treatment method according to claim 18 in which the keratin fibers are previously washed with a shampoo, rinsed, then optionally treated with a rinse-off treatment before applying the composition (C).

20. Treatment method according to claim 18 or 19 in which the composition (C) is not rinsed after application.

21. Use of the composition (C) according to one of claims 1 to 17, for the treatment of keratin fibers, and more particularly for the repair and smoothing of hair.