Composition comprising at least one particular agent, and an antioxidant agent in a specific content

Abstract

Title: Composition comprising a particular agent, and an antioxidant agent in a specific content The present invention relates to a composition comprising: a) at least one agent chosen from acids comprising at least one linear or branched, saturated or unsaturated aliphatic chain, containing from 3 to 5 carbon atoms and their salts; b) at least 1.2% by weight of at least one antioxidant agent relative to the total weight of the composition.

Description

Title of the invention: Composition comprising at least one particular agent, and an antioxidant agent in a specific content

[0001] The present invention relates to a composition comprising at least one agent chosen from acids comprising at least one linear or branched, saturated or unsaturated aliphatic chain containing from 3 to 5 carbon atoms and their salts, and at least one antioxidant agent in a specific content.

[0002] The invention also relates to a cosmetic treatment method using this composition and to the use of said composition for the cosmetic treatment of keratin materials. Technical field

[0003] Hair is generally damaged and weakened by the action of external atmospheric agents such as light and bad weather, as well as by mechanical or chemical treatments such as brushing, combing, dyeing, bleaching, perming and / or straightening, or even repeated washing.

[0004] The hair is thus damaged by these different factors and can in the long run become dry, rough, brittle or dull, particularly in fragile areas, and more particularly at the ends.

[0005] Furthermore, consumers may experience problems with itching of the scalp (also called scalp in the present description), but also with tingling or even a feeling of heating, or even flaking of the scalp.

[0006] To overcome these drawbacks, it is usual to use hair care products which use compositions intended to condition the hair, providing it with satisfactory cosmetic properties, in particular smoothing, suppleness, a natural feel and good detangling properties, and which provide short-term effects making it possible to deal with the effects of scalp discomfort, with instant relief.

[0007] Nevertheless, existing products on the market, particularly the anti-dandruff market, do not necessarily give complete satisfaction and can still be improved, particularly concerning cosmetic properties, such as smooth feel and flexibility. In addition, these products do not always have good stability over time with a degradation of the condition of said product which can be observed.

[0008] There is therefore a real need to provide a composition that makes it possible to reduce, or even eliminate, the undesirable effects of scalp discomfort, such as tingling, itching and / or the feeling of heating while maintaining or even restoring the balance of the microbial flora of the scalp (maintaining and / or restoring the ecoflora of the scalp to a normal level), and preserving good cosmetic properties for the hair and roots, such as a smooth feel and suppleness, and which also has good stability over time.

[0009] It has been surprisingly discovered that a particular cosmetic composition makes it possible to achieve the objectives set out above. Statement of the invention

[0010] The present invention therefore relates to a composition comprising:

[0011] a) at least one agent chosen from acids comprising at least one ali chain linear or branched, saturated or unsaturated phatic, containing 3 to 5 carbon atoms and their salts; and

[0012] b) at least 1.2% by weight of at least one antioxidant agent relative to the total weight of the composition.

[0013] The composition according to the invention makes it possible to provide good cosmetic properties to keratin fibers, in particular in terms of smooth feel.

[0014] The composition according to the invention also makes it possible to maintain or even restore the balance of the microbial flora of the scalp.

[0015] The present invention also relates to a cosmetic treatment process, preferably of keratin materials, in particular human keratin materials such as the scalp, or scalp, and hair, comprising the application to said keratin materials of the composition according to the invention.

[0016] The present invention further relates to the use of the composition according to the invention for the cosmetic treatment, in particular of keratin materials, in particular human keratin materials such as the scalp, or scalp, and hair.

[0017] The present invention also relates to the use of a composition as defined above for maintaining or even restoring the balance of the microbial flora of the scalp.

[0018] The expression “at least one” means one or more.

[0019] Unless otherwise indicated, the limits of a domain of values ​​are included in this domain, in particular in the expressions “between” and “ranging from ... to ... ».

[0020] The invention is not limited to the illustrated examples. The characteristics of the different examples may in particular be combined within non-illustrated variants.

[0021] For the purposes of the present invention, the term “hair” means the hair of the head. This term does not refer to hair, eyebrows, or eyelashes. Agent a)

[0022] As indicated previously, the composition according to the invention comprises a) at least one agent chosen from acids comprising at least one linear or branched, saturated or unsaturated aliphatic chain containing from 3 to 5 carbon atoms and their salts.

[0023] Preferably, the agent a) is chosen from carboxylic acids comprising 3 to 5 carbon atoms, in particular monocarboxylic acids, and very particularly acids comprising a linear or branched, saturated or unsaturated, preferably unsubstituted, aliphatic chain containing from 3 to 5 carbon atoms and their salts.

[0024] Preferably, the acid(s) comprising at least one linear or branched, saturated or unsaturated, preferably unsubstituted, aliphatic chain containing from 3 to 5 carbon atoms are chosen from propionic acid, butyric acid, valeric acid, and mixtures thereof, more preferably propionic acid.

[0025] The salts of the acids comprising at least one linear or branched, saturated or unsaturated, preferably unsubstituted, aliphatic chain containing from 3 to 5 carbon atoms are preferably chosen from the salts of alkali metals, of alkaline earth metals, more preferably from the salts of alkali metals, better still the salts of sodium or potassium, better still of sodium.

[0026] Advantageously, the agent a) is chosen from propionic acid, butyric acid, valeric acid, their salts and their mixtures, preferably from the salts of propionic acid, preferably from the calcium salts, the sodium salts, the magnesium salts, the potassium salts of propionic acid and their mixtures, more preferably from sodium propionate.

[0027] Advantageously, the total content of agent(s) a) ranges from 0.1 to 20% by weight, preferably from 0.1 to 10% by weight, more preferably from 0.5 to 5% by weight, even more preferably from 0.5 to 3% by weight relative to the total weight of the composition.

[0028] Advantageously, the total content of propionic acid and / or one of its salts ranges from 0.1 to 20% by weight, preferably from 0.1 to 10% by weight, more preferably from 0.5 to 5% by weight, even more preferably from 0.5 to 3% by weight relative to the total weight of the composition.

[0029] Advantageously, the total sodium propionate content ranges from 0.1 to 20% by weight, preferably from 0.1 to 10% by weight, more preferably from 0.5 to 5% by weight, even more preferably from 0.5 to 3% by weight relative to the total weight of the composition. Antioxidant agent b)

[0030] As indicated previously, the composition according to the invention comprises at least 1.2% by weight of at least one antioxidant agent b) relative to the total weight of the composition.

[0031] For the purposes of the present invention, the term “antioxidant agent” means an agent which slows down or prevents the oxidation of other chemical substances upon contact with it.

[0032] Advantageously, the antioxidant agent(s) are chosen from tocopherol and its esters, in particular tocopherol acetate; ascorbic acid, its salts and its derivatives, in particular its esters, in particular ascorbyl palmitate, ascorbyl magnesium phosphate and ascorbyl glucoside; retinol and its esters, in particular retinyl palmitate; butylhydroxytoluene (BHT) and butylhydroxyanisole (BHA); N,N'-bis(3,4,5-trimethoxybenzyl)ethylenediamine and its salts; erythorbic acid and its salts; baicalin; the compounds corresponding to the following formula (F): O (F) R^R'

[0033] in which:

[0034] - R is a substituted or unsubstituted aromatic ring, preferably substituted by one or several alkyl, hydroxyl, amino, and / or thiol groups;

[0035] - R' is a linear, branched or cyclic alkyl chain, comprising from 1 to 15 carbon atoms, substituted or not;

[0036] and mixtures thereof.

[0037] Preferably, the compound(s) of formula (F) are chosen from those for which:

[0038] - R is an aromatic ring substituted by one or more hydroxyl groups, more preferably substituted by a single hydroxyl group;

[0039] - R' is a linear alkyl chain comprising from 1 to 15 carbon atoms, preferably from 1 to 6 carbon atoms, more preferably from 1 to 4 carbon atoms, optionally substituted by one or more hydroxyl, amino, and / or thiol groups.

[0040] Examples of preferred aromatic ketones that may be mentioned are hydroxyacetophenones such as p-hydroxyacetophenone (or 4-hydroxy acetophenone), 2-hydroxyacetophenone, 3-hydroxyacetophenone, alpha hydroxyacetophenone and mixtures thereof, more preferably p-hydroxycetophenone.

[0041] For the purposes of the present invention, the term "ascorbic acid derivatives" may be understood to mean those obtained by blocking at least one hydroxyl site, in particular by esterification or etherification with, for example, phosphate, sulfate or alkyl compounds. This may include, in particular, ascorbyl magnesium phosphate, palmitate ascorbyl, ascorbyl glucoside.

[0042] The salts of ascorbic acid or erythorbic acid may be chosen from alkali metal or alkaline earth metal salts, preferably alkali metal salts such as sodium or potassium salts.

[0043] Preferably, the antioxidant agent(s) b) are chosen from tocopherol and its esters, in particular tocopherol acetate, ascorbic acid, its salts and its derivatives, in particular its esters and their mixtures, hydroxyacetophenones, in particular p-hydroxyacetophenone and their mixtures, more preferably from tocopherol and its esters, in particular tocopherol acetate, hydroxyacetophenones, in particular p-hydroxyacetophenone and their mixtures.

[0044] Advantageously, the total content of agent(s) b) ranges from 1.2 to 20% by weight, preferably from 1.3 to 10% by weight, more preferably from 1.4 to 5% by weight, even more preferably from 1.5 to 3% by weight relative to the total weight of the composition.

[0045] Advantageously, the composition according to the invention comprises at least one agent chosen from tocopherol and its esters according to a content ranging from 0.5 to 20% by weight, preferably from 0.5 to 10% by weight, more preferably from 0.5 to 5% by weight, even more preferably from 0.5 to 2% by weight, better still from 0.5 to 1% by weight relative to the total weight of the composition.

[0046] Advantageously, the composition according to the invention comprises at least one agent chosen from hydroxyacetophenones, in particular p-hydroxyacetophenone, in a total content ranging from 0.5 to 20% by weight, preferably from 0.5 to 10% by weight, more preferably from 0.5 to 5% by weight, even more preferably from 0.5 to 2% by weight relative to the total weight of the composition.

[0047] More preferably, the composition according to the invention comprises at least a first antioxidant agent and a second antioxidant agent, the first being chosen from tocopherol and its esters, in particular tocopherol acetate, and the second being chosen from hydroxyacetophenones, in particular p-hydroxyacetophenone. Surfactant c)

[0048] The composition according to the invention may further comprise c) at least one anionic surfactant and / or at least one amphoteric or zwitterionic surfactant, as well as mixtures thereof.

[0049] Preferably, the composition according to the invention comprises at least one anionic surfactant and at least one amphoteric surfactant.

[0050] Preferably, the total content of anionic and / or amphoteric surfactant(s) ranges from 1 to 50% by weight, preferably from 5 to 30% by weight, more preferably from 10 to 20% by weight relative to the total weight of the composition. Anionic surfactants

[0051] Anionic surfactant is understood to mean a surfactant comprising only anionic groups as ionic or ionizable groups.

[0052] In the present description, an entity is described as being "anionic" when it has at least one permanent negative charge or when it can be ionized into a negatively charged entity, under the conditions of use of the composition of the invention (medium, pH for example) and not comprising a cationic charge.

[0053] Preferably, the anionic surfactant(s) are chosen from sulfate-type anionic surfactants.

[0054] By “sulfate-type anionic surfactant” is meant, within the meaning of the present invention, an anionic surfactant comprising one or more sulfate functions (-OSO3H or -OSO3).

[0055] Such surfactants may advantageously be chosen from alkyl sulfates, alkyl ether sulfates, alkylamidosulfates, alkylamidoether sulfates, alkylaryl polyether sulfates, monoglyceride sulfates; as well as their salts and their mixtures; the alkyl groups of these compounds comprising in particular from 8 to 30 carbon atoms, preferably from 8 to 26, and more preferably from 10 to 22 carbon atoms; the aryl group preferably denoting a phenyl or benzyl group; these compounds may be polyoxyalkylenated, in particular polyoxyethylenated and preferably comprising from 1 to 50 ethylene oxide units, and more preferably from 2 to 10 ethylene oxide units.

[0056] Preferably, the anionic surfactant(s) of sulfate type are chosen from: - alkyl sulfates, in particular C8 to C26, and preferably C10 to C22, - alkyl ether sulfates, in particular C8 to C26, and preferably C10 to C22, preferably comprising from 2 to 10 ethylene oxide units; in particular in the form of salts, in particular in the form of alkali or alkaline-earth metal, ammonium or amino alcohol salts, and their mixtures.

[0057] When the sulfate-type anionic surfactant(s) are in salt form, said salt may be chosen from alkali metal salts, such as the sodium or potassium salt, ammonium salts, amine salts, and in particular amino alcohol salts, alkaline-earth metal salts, such as the magnesium salt, and mixtures thereof.

[0058] Examples of amino alcohol salts include mono-, di- and triethanolamine salts, mono-, di- or triisopropanolamine salts, 2-amino 2-methyl 1-propanol, 2-amino 2-methyl 1,3-propanediol and tris(hydroxymethyl)amino methane salts.

[0059] Preferably, salts of alkali or alkaline earth metals are used, and in par- particularly sodium or magnesium salts.

[0060] Preferably, the anionic surfactant(s) are chosen from sodium, triethanolamine, magnesium or ammonium alkyl(C10-C22) sulfates, sodium, triethanolamine, ammonium or magnesium alkyl(C10-C22) ether sulfates, oxyethylenated, for example with 1 or 2.2 moles of ethylene oxide, and mixtures thereof.

[0061] Better still, the anionic surfactant(s) are chosen from sodium, triethanolamine, ammonium or magnesium alkyl(C10-C22) sulfates, sodium, triethanolamine, ammonium or magnesium alkyl(C10-C22) ether sulfates such as the compounds marketed under the name TEXAPON Z95P by the company BASF with the INCI name sodium lauryl sulfate or TEXAPON N701 by the company BASF with the INCI name sodium laureth sulfate.

[0062] Even more preferably, the anionic surfactant(s) are chosen from sodium, triethanolamine, ammonium or magnesium alkyl(C10-C22) ether sulfates, better still from sodium alkyl(C10-C22) ether sulfates and mixtures thereof.

[0063] According to a preferred embodiment, the anionic surfactant(s) are chosen from sodium lauryl sulfate, ammonium lauryl sulfate, sodium lauryl ether sulfate, ammonium lauryl ether sulfate and mixtures thereof, more preferably chosen from sodium lauryl ether sulfate.

[0064] Advantageously, the anionic surfactant(s) are present in a total content ranging from 0.5 to 50% by weight, preferably from 1 to 30% by weight, more preferably from 4 to 20% by weight, even more preferably from 5 to 15% by weight relative to the total weight of the composition.

[0065] Advantageously, the anionic surfactant(s) of sulfate type are present in a total content ranging from 0.5 to 50% by weight, preferably from 1 to 30% by weight, more preferably from 4 to 20% by weight, even more preferably from 5 to 15% by weight relative to the total weight of the composition. Amphoteric or zwitterionic surfactants

[0066] The amphoteric or zwitterionic surfactant(s) may in particular be derivatives of secondary or tertiary aliphatic amines, optionally quaternized, in which the aliphatic group is a linear or branched chain comprising from 8 to 22 carbon atoms, said amine derivatives containing at least one anionic group such as, for example, a carboxylate, sulfonate, sulfate, phosphate or phosphonate group.

[0067] Preferably, these surfactants are non-silicone.

[0068] Among the derivatives of secondary or tertiary aliphatic amines, optionally quaternized, which can be used, as defined above, mention may also be made of: composed of the following respective formulas (3) and (4):

[0069] Ra-CONHCH2CH2-N+(Rb)(Rc)-CH2COO, M+, X (3)

[0070] in which:

[0071] - Ra represents a C10 to C30 alkyl or alkenyl group derived from an acid RaCOOH, preferably present in the hydrolyzed coconut oil, a heptyl, nonyl or undecyl group;

[0072] - Rb represents a beta-hydroxyethyl group; and

[0073] - Rc represents a carboxymethyl group;

[0074] - M+ represents a cationic counterion derived from an alkali, alkaline earth metal, such as than sodium, an ammonium ion or an ion from an organic amine, and

[0075] - X represents an organic or inorganic anionic counterion, such as that chosen among the halides, acetates, phosphates, nitrates, alkyl(Ci-C4)sulfates, alkyl(Ci-C4)- or alkyl(Ci-C4)aryl-sulfonates, in particular methylsulfate and ethylsulfate; or else M+ and X are absent;

[0076] Ra-CONHCH2CH2-N(B)(B') (4)

[0077] in which:

[0078] - B represents the group -CH2CH2OX';

[0079] - B' represents the group -(CH2)ZY', with z = 1 or 2;

[0080] - X' represents the group -CH2COOH, -CH2-COOZ', -CH2CH2COOH, CH2CH2 - COOZ', or a hydrogen atom;

[0081] - Y' represents the group -COOH, -COOZ', -CH2CH(OH)SO3H or the group CH2 CH(OH)SO3-Z' ;

[0082] - Z' represents a cationic counterion derived from an alkali or alkaline earth metal, such as than sodium, an ammonium ion or an ion from an organic amine;

[0083] - Ra- represents a C10 to C30 alkyl or alkenyl group of an acid Ra -COOH of preferably present in coconut oil or in hydrolyzed linseed oil, an alkyl group, in particular Cp and its iso form, an unsaturated Cp group.

[0084] These compounds are classified in the CTFA dictionary, 5th edition, 1993, under the names disodium cocoamphodiacetate, disodium lauroamphodiacetate, disodium caprylamphodiacetate, disodium capryloamphodiacetate, disodium cocoampho-dipropionate, disodium lauroamphodipropionate, disodium caprylampho-dipropionate, disodium capryloamphodipropionate, lauroamphodi-propionic acid, cocoamphodipropionic acid.

[0085] As an example, we can cite cocoamphodiacetate marketed by the company RHODIA under the trade name MIRANOL® C2M concentrate.

[0086] Compounds of formula (5) can also be used:

[0087] Ra-NHCH(Y”)-(CH2)nCONH(CH2)nN(Rd)(Re) (5)

[0088] in which:

[0089] - Y” represents the group -COOH, -COOZ”, -CH2-CH(OH)SO3H or the group CH2 CH(OH)SO3-Z” ;

[0090] - Rd and Re, independently of one another, represent an alkyl or hy- radical C1-C4 droxyalkyl;

[0091] - Z” represents a cationic counterion derived from an alkali or alkaline earth metal, such as sodium, an ammonium ion, or an ion from an organic amine;

[0092] - R, represents a Cio to C30 alkyl or alkenyl group of an acid Ra—COOH of preferably present in coconut oil or hydrolyzed linseed oil;

[0093] - n and n', independently of each other, denotes an integer ranging from 1 to 3.

[0094] Among the compounds that can be used, we can cite the compound classified in the dictionary CTFA under the name sodium diethylaminopropyl cocoaspartamide and marketed by the company CHIMEX under the name CHIMEXANE HB.

[0095] These compounds can be used alone or in mixtures.

[0096] Preferably, the amphoteric or zwitterionic surfactant(s) are chosen, alone or as a mixture, from alkyl(C8-C20)betaines, alkyl(C8-C20)sulfobetaines, alkyl(C8-C2o)amidoalkyl(C3-C8)betaines and alkyl(C8-C2o)amidoalkyl(C6-C8)sulfobetaines, as well as the compounds of formulae (3), (4) and (5) as defined above.

[0097] Advantageously, the amphoteric or zwitterionic surfactant(s) are chosen from alkyl(C8-C20)betaines, alkyl(C8-C20)sulfobetaines, alkyl(C8-C20)amidoalkyl(C3-C8)betaines, alkyl(C8-C2o)amidoalkyl(C6-C8)sulfobetaines, and mixtures thereof, more preferably chosen from alkyl(C8-C20)betaines, alkyl(C8-C2o)amidoalkyl(C3-C8)betaines and mixtures thereof, more preferably still from alkyl(C8-C20)betaines such as coco betaine.

[0098] Advantageously, the amphoteric or zwitterionic surfactant(s) are present in a total content ranging from 0.1 to 20% by weight, preferably from 0.5 to 15% by weight, more preferably from 0.75 to 10% by weight, even more preferably from 1 to 8% by weight, better still from 2 to 5% by weight relative to the total weight of the composition.

[0099] Advantageously, the amphoteric or zwitterionic surfactant(s) chosen from alkyl(C8-C20)betaines, alkyl(C8-C20)amidoalkyl(C3-C8)betaines, and mixtures thereof are present in a total content ranging from 0.1 to 20% by weight, preferably from 0.5 to 15% by weight, more preferably from 0.75 to 10% by weight, even more preferably from 1 to 8% by weight, better still from 2 to 5% by weight relative to the total weight of the composition.

[0100] Advantageously, the amphoteric or zwitterionic surfactant(s) chosen from alkyl(C8-C2o)betaines are present in a total content ranging from 0.1 to 20% by weight, preferably from 0.5 to 15% by weight, more preferably from 0.75 to 10% by weight. weight, even more preferably from 1 to 8% by weight, better still from 2 to 5% by weight relative to the total weight of the composition.

[0101] According to a preferred embodiment, the composition according to the invention comprises at least one anionic surfactant, in particular as defined above, and at least one amphoteric or zwitterionic surfactant, in particular as defined above. Cationic polymer d)

[0102] The composition according to the invention may further comprise at least one cationic polymer d). This polymer is non-silicone.

[0103] The term "cationic polymer" means any polymer comprising cationic groups and / or groups ionizable into cationic groups. Preferably, the cationic polymer is hydrophilic or amphiphilic. The preferred cationic polymers are chosen from those which contain units comprising primary, secondary, tertiary and / or quaternary amine groups which can either be part of the main polymer chain or be carried by a side substituent directly linked to it.

[0104] The cationic polymers that can be used preferably have a weight-average molar mass (Mw) of between approximately 500 and 5.106, preferably of between approximately 103 and 3.106.

[0105] Among the cationic polymers, we can cite more particularly:

[0106] (1) homopolymers or copolymers derived from acrylic esters or amides or methacrylic and comprising at least one of the units of the following formula: R. —CHr-Ç.^ oç NH A nf H r3 —CH^Ç — oc NH x- HAS p ---'-—R :• R,. ■ •-»

[0107] in which:

[0108] - R3, identical or different, denote a hydrogen atom or a CH3 radical;

[0109] - A, identical or different, represent a divalent alkyl group, linear or branched, from 1 to 6 carbon atoms, preferably 2 or 3 carbon atoms or a hydroxyalkyl group of 1 to 4 carbon atoms;

[0110] - R4, R5, R6, identical or different, represent an alkyl group having from 1 to 18 carbon atoms or a benzyl radical; preferably an alkyl group having from 1 to 6 carbon atoms;

[0111] - Ri and R2, identical or different, represent a hydrogen atom or a group alkyl having from 1 to 6 carbon atoms, preferably methyl or ethyl;

[0112] - X denotes an anion derived from a mineral or organic acid such as a me- anion thiosulfate or a halide such as chloride or bromide.

[0113] The copolymers of family (1) may also contain one or more units derived from comonomers which may be chosen from the family of acrylamides, methacrylamides, diacetone acrylamides, acrylamides and methacrylamides substituted on the nitrogen by lower alkyls (C1-C4), acrylic or methacrylic acids or their esters, vinyllactams such as vinylpyrrolidone or vinylcaprolactam, vinyl esters.

[0114] Among these copolymers of family (1), we can cite:

[0115] - copolymers of acrylamide and quaternized dimethylaminoethyl methacrylate dimethyl sulfate or with a dimethyl halide, such as that sold under the name HERCOFLOC by the company HERCULES,

[0116] - copolymers of acrylamide and methacryloyloxyethyltrimethyl chloride ammonium, such as those sold under the name BINA QU AT P 100 by the company CIBA GEIGY,

[0117] - the copolymer of acrylamide and methacryloyloxyethyl-trimethyl- methosulfate ammonium, such as that sold under the name RETEN by the company HERCULES,

[0118] - vinylpyrrolidone / dialkylaminoalkyl acrylate or methacrylate copolymers, quaternized or not, such as the products sold under the name “GAFQUAT” by the company ISP such as for example “GAFQUAT 734” or “GAFQUAT 755” or the products called “COPOLYMER 845, 958 and 937”. These polymers are described in detail in French patents 2,077,143 and 2,393,573;

[0119] - dimethylaminoethyl methacrylate / vinylcaprolactam / vinyl- terpolymers pyrrolidone, such as the product sold under the name GAFFIX VC 713 by the company ISP,

[0120] - vinylpyrrolidone / methacrylamidopropyldimethylamine copolymers, such as those marketed under the name STYLEZE CC 10 by ISP;

[0121] - vinylpyrrolidone / dimethylaminopropyl methacrylamide copolymers qua- tarnished, such as the product sold under the name “GAFQUAT HS 100” by the company ISP,

[0122] - polymers, preferably crosslinked, of methacryloyloxyalkyl(Cl-C4) salts trialkyl(Cl-C4)ammonium such as polymers obtained by homopolymerization of dimethylaminoethylmethacrylate quaternized with methyl chloride, or by copolymerization of acrylamide with dimethylaminoethylmethacrylate quaternized with methyl chloride, the homo- or copolymerization being followed by crosslinking with an olefinically unsaturated compound, in particular methylene bisacrylamide. More particularly, a crosslinked acrylamide / methacryloyloxyethyltrimethylammonium chloride copolymer (20 / 80 by weight) may be used in the form of a dispersion comprising 50% by weight of said copolymer in mineral oil. This dispersion is marketed under the name "SALCARE® SC 92" by the company CIBA. Alternatively, a crosslinked homopolymer of methacryloyloxyethyltrimethylammonium chloride comprising about 50% by weight of the homopolymer in mineral oil or in a liquid ester may be used.These dispersions are marketed under the names “SALCARE® SC 95” and “SALCARE® SC 96” by the company CIBA.

[0123] (2) cationic polysaccharides, in particular celluloses and ga- cationic lactomannans. Among the cationic polysaccharides, we can cite more particularly cellulose ether derivatives containing groups quaternary ammonium, cationic cellulose copolymers or cellulose derivatives grafted with a water-soluble quaternary ammonium monomer and cationic galactomannan gums.

[0124] Cellulose ether derivatives comprising quaternary ammonium groups are described in particular in FR1492597, and mention may be made of the polymers marketed under the name “UCARE POLYMER JR” (JR 400 LT, JR 125, JR 30M) or “LR” (LR 400, LR 30M) by the company AMERCHOL. These polymers are also defined in the CTFA dictionary as quaternary ammoniums of hydroxyethylcellulose having reacted with an epoxide substituted by a trimethylammonium group.

[0125] Cationic cellulose copolymers or cellulose derivatives grafted with a water-soluble quaternary ammonium monomer are described in particular in patent US4131576, and mention may be made of hydroxyalkylcelluloses, such as hydroxymethyl-, hydroxyethyl- or hydroxypropyl celluloses grafted in particular with a salt of methacryloylethyl trimethylammonium, methacrylamidopropyl trimethylammonium, dimethyl-diallylammonium. The marketed products meeting this definition are more particularly the products sold under the name "Celquat L 200" and "Celquat H 100" by the National Starch Company.

[0126] Cationic galactomannan gums are described more particularly in patents US3589578 and US4031307, and mention may be made of guar gums comprising cationic trialkylammonium groups. For example, guar gums modified with a salt (for example a chloride) of 2,3-epoxypropyl trimethylammonium are used. Mention may be made of the compounds with the INCI name guar hydroxypropyl-trimonium chloride or hydroxypropyl guar hydroxypropyltrimonium chloride. Such products are marketed in particular under the names JAGUAR C13 S, JAGUAR C 15, JAGUAR C 17 or JAGUAR C162 by the company RHODIA.

[0127] (3) polymers consisting of piperazinyl units and divalent alkylene radicals or hydroxyalkylene with linear or branched chains, optionally interrupted by oxygen, sulfur, nitrogen atoms or by aromatic or heterocyclic rings, as well as the oxidation and / or quaternization products of these polymers.

[0128] (4) water-soluble polyaminoamides, prepared in particular by polycon densification of an acidic compound with a polyamine; these polyaminoamides can be crosslinked by an epihalohydrin, a diepoxide, a dianhydride, an unsaturated dianhydride, a bis-unsaturated derivative, a bis-halohydrin, a bis-azetidinium, a bis-haloacyldiamine, an alkyl bis-halide or by an oligomer resulting from the reaction of a bifunctional compound reactive with respect to a bis-halohydrin, a bis-azetidinium, a bis-haloacyldiamine, an alkyl bis-halide, an epihalohydrin, a diepoxide or a bis-unsaturated derivative; the crosslinking agent being used in proportions ranging from 0.025 to 0.35 mole per amine group of the polyaminoamide; these polyaminoamides can be alkylated or, if they contain one or more tertiary amine functions, quaternized.

[0129] (5) polyaminoamide derivatives resulting from the condensation of polyalkylenes polyamines with polycarboxylic acids followed by alkylation by bifunctional agents. Examples include adipic acid-diacoylaminohydroxyalkyldialoylene triamine polymers in which the alkyl radical contains 1 to 4 carbon atoms and preferably denotes methyl, ethyl, propyl. Among these derivatives, mention may be made more particularly of adipic acid / dimethylaminohydroxypropyl / diethylene triamine polymers sold under the name “Cartaretine F, F4 or F8” by the company Sandoz.

[0130] (6) polymers obtained by reaction of a polyalkylene polyamine comprising two primary amine groups and at least one secondary amine group with a dicarboxylic acid chosen from diglycolic acid and saturated aliphatic dicarboxylic acids having from 3 to 8 carbon atoms; the molar ratio between the polyalkylene polyamine and the dicarboxylic acid preferably being between 0.8:1 and 1.4:1; the resulting polyaminoamide being reacted with epichlorohydrin in a molar ratio of epichlorohydrin relative to the secondary amine group of the polyaminoamide preferably between 0.5:1 and 1.8:1. Polymers of this type are in particular marketed under the name "Hercosett 57" by the company Hercules Inc. Or under the name "PD 170" or "Delsette"01 " by the company Hercules in the case of the adipic acid / epoxypropyl / diethylene-triamine copolymer.

[0131] (7) alkyl diallyl amine or dialkyl diallyl ammonium cyclopolymers such as homopolymers or copolymers comprising as the main constituent of the chain units corresponding to formulas (I) or (II):

[0132] in which

[0133] - k and t are equal to 0 or 1, the sum k + t being equal to 1;

[0134] - R12 denotes a hydrogen atom or a methyl radical;

[0135] - Rio and Rn, independently of each other, denote a Ci - alkyl group C6, a C1-C5 hydroxyalkyl group, a C1-C4 amidoalkyl group; or R10 and Rn may denote, together with the nitrogen atom to which they are attached, a heterocyclic group such as piperidinyl or morpholinyl; R10 and Rn, independently of one another, preferably denote a C1-C4 alkyl group;

[0136] - Y is an anion such as bromide, chloride, acetate, borate, citrate, tartrate, bisulfate, bisulfite, sulfate, phosphate.

[0137] Mention may be made more particularly of the homopolymer of salts (for example chloride) of dimethyldiallylammonium, for example sold under the name "MERQUAT 100" by the company NALCO, and the copolymers of salts (for example chloride) of diallyldimethylammonium and acrylamide, for example Polyquatemium-7. These copolymers of diallyldimethylammonium and acrylamide salts may be marketed in particular under the name "MERQUAT 550", "MERQUAT 7SPR", "MERQUAT 550PR" or "FLOCARE C107".

[0138] (8) quaternary diammonium polymers comprising recurring units of formula:

[0139] in which:

[0140] - R13, R14, R15 and R16, identical or different, represent ali radicals phatic, alicyclic, or arylaliphatic radicals comprising from 1 to 20 carbon atoms or Cl-Cl2 hydroxyalkylaliphatic radicals,

[0141] or R13, R14, R15 and R16, together or separately, constitute with the nitrogen atoms to which they are attached heterocycles optionally comprising a second heteroatom other than nitrogen

[0142] or R13, R14, R15 and R16 represent a linear or branched C1-C6 alkyl radical substituted by a nitrile, ester, acyl, amide or -CO-O-R17-D or -CO-NH-R17-D group where R17 is an alkylene and D a quaternary ammonium group;

[0143] - Al and B1 represent divalent polymethylene groups comprising 2 to 20 carbon atoms, linear or branched, saturated or unsaturated, and which may contain, linked to or intercalated in the main chain, one or more aro cycles matic, or one or more oxygen, sulfur atoms or sulfoxide, sulfone, disulfide, amino, alkylamino, hydroxyl, quaternary ammonium, ureido, amide or ester groups, and

[0144] - X denotes an anion derived from a mineral or organic acid;

[0145] it being understood that Al, R13 and R15 can form with the two nitrogen atoms to which they are attached a piperazine ring;

[0146] furthermore if Al denotes a linear or branched, saturated or unsaturated alkylene or hydroxyalkylene radical, B1 can also denote a group (CH2)n-CO-D-OC-(CH2)p-, with n and p, identical or different, being integers varying from 2 to 20, and D denoting:

[0147] a) a glycol residue of formula -OZO-, where Z denotes a linear or branched hydrocarbon radical or a group corresponding to one of the following formulas: -(CH2CH2O)x-CH2CH2- and -[CH2CH(CH3)O]y-CH2CH(CH3)- where x and y denote an integer from 1 to 4, representing a defined and unique degree of polymerization or any number from 1 to 4 representing an average degree of polymerization;

[0148] b) a bis-secondary diamine residue such as a piperazine derivative;

[0149] c) a bis-primary diamine residue of formula -NH-Y-NH- where Y denotes a radical linear or branched hydrocarbon, or the divalent radical -CH2-CH2-SS-CH2-CH2-;

[0150] d) a ureylene group of formula -NH-CO-NH-.

[0151] Preferably, X- is an anion such as chloride or bromide. These polymers have a number-average molar mass (Mn) generally between 1000 and 100000.

[0152] We can cite more particularly polymers which are made up of recurring units corresponding to the formula: ™ N - (CH^- M™ (CHX — (IV) R? X' R<

[0153] in which RI, R2, R3 and R4, identical or different, denote an alkyl or hydroxyalkyl radical having from 1 to 4 carbon atoms, n and p are whole numbers varying from 2 to 20, and X- is an anion derived from a mineral or organic acid.

[0154] A particularly preferred compound of formula (IV) is that for which RI, R2, R3 and R4 represent a methyl radical, n=3, p=6 and X = Cl, called Hexadi-methrine chloride according to the INCI nomenclature (CTFA).

[0155] (9) quaternary polyammonium polymers comprising units of formula (V): N*» MH TCHA -M* ~ A — X- § § (V) . X- :'

[0156] in which:

[0157] - R18, R19, R20 and R21, identical or different, represent a hydrogen atom or a methyl, ethyl, propyl, [3-hydroxyethyl, [3-hydroxypropyl or -CH2CH2(OCH2CH2)pOH radical, where p is equal to 0 or to an integer between 1 and 6, provided that R18, R19, R20 and R21 do not simultaneously represent a hydrogen atom,

[0158] - r and s, identical or different, are whole numbers between 1 and 6,

[0159] - q is equal to 0 or to an integer between 1 and 34,

[0160] - X denotes an anion such as a halide,

[0161] - A denotes a divalent radical of a dihalide or preferably represents - CH2-CH2-O-CH2-CH2-.

[0162] For example, we can cite the products “Mirapol® A 15”, “Mirapol® ADI”, “Mirapol® AZ1” and “Mirapol® 175” sold by the company Miranol.

[0163] (10) Quaternary polymers of vinylpyrrolidone and vinylimidazole such as for example, products marketed under the names Luviquat® FC 905, FC 550 and FC 370 by the company BASF

[0164] (11) Polyamines such as Polyquart® H sold by COGNIS, referenced under the name of “POLYETHYLENEGLYCOL (15) TALLOW POLYAMINE” in the CTFA dictionary.

[0165] (12) polymers comprising in their structure:

[0166] (a) one or more patterns corresponding to the following formula (A): —CH^—CH NH2

[0167] (b) optionally one or more patterns corresponding to the following formula (B): CH—CH— ' j (B) NH—CH ri O

[0168] In other words, these polymers can be chosen in particular from homo- or copolymers comprising one or more units derived from vinylamine and optionally one or more units derived from vinylformamide.

[0169] Preferably, these cationic polymers are chosen from polymers comprising, in their structure, from 5 to 100 mol% of units corresponding to formula (A) and from 0 to 95 mol% of units corresponding to formula (B), preferably initially from 10 to 100 mol% of units corresponding to formula (A) and from 0 to 90 mol% of units corresponding to formula (B).

[0170] These polymers can be obtained for example by partial hydrolysis of polyvinylformamide. This hydrolysis can be carried out in an acidic or basic medium.

[0171] The weight-average molecular mass of said polymer, measured by light diffraction, can vary from 1000 to 3,000,000 g / mol, preferably from 10,000 to 1,000,000 and more particularly from 100,000 to 500,000 g / mol.

[0172] The polymers comprising units of formula (A) and optionally units of formula (B) are notably sold under the name LUPAMIN by the company BASF, such as, for example, and in a non-limiting manner, the products offered under the name LUPAMIN 9095, LUPAMIN 5095, LUPAMIN 1095, LUPAMIN 9030 (or LUVIQUAT 9030) and LUPAMIN 9010.

[0173] Other cationic polymers that can be used in the context of the invention are cationic proteins or hydrolysates of cationic proteins, polyalkyleneimines, in particular polyethyleneimines, polymers comprising vinylpyridine or vinylpyridinium units, condensates of polyamines and epichlorohydrin, quaternary polyureylenes and chitin derivatives.

[0174] Preferably, the cationic polymers are chosen from those of families (1), (2), (7) and (10) cited above.

[0175] Among the cationic polymers mentioned above, it is preferable to use cationic polysaccharides, in particular celluloses and cationic galactomannan gums, and in particular quaternary cellulose ether derivatives such as the products sold under the name "JR 400" by the company AMERCHOL, or guar gums comprising cationic trialkylammonium groups, cationic cyclopolymers, in particular homopolymers or copolymers of salts (for example chloride) of dimethyldiallylammonium, sold under the names MERQUAT 100, MERQUAT 550 and MERQUAT S by the company NALCO, quaternary polymers of vinylpyrrolidone and vinylimidazole, homopolymers or copolymers, optionally crosslinked, of methacryloyloxyalkyl(Cl-C4) salts. trialkyl(Cl-C4)ammonium; and mixtures thereof.

[0176] Preferably, the cationic polymer(s), when present in the composition, are chosen from cationic polysaccharides and their mixtures, preferentially from cationic galactomannan gums and their mixtures, more preferentially from cationic guar gums and their mixtures.

[0177] Advantageously, the total content of the cationic polymer(s) ranges from 0.01 to 10% by weight, preferably from 0.05 to 5% by weight, more preferably from 0.1 to 1% by weight, better still from 0.1 to 0.5% by weight relative to the total weight of the composition.

[0178] Advantageously, the total content of the cationic polysaccharide(s) and their mixtures ranges from 0.01 to 10% by weight, preferably from 0.05 to 5% by weight, more preferably from 0.1 to 1% by weight, better still from 0.1 to 0.5% by weight relative to the total weight of the composition.

[0179] Advantageously, the total content of the cationic guar gum(s) and their mixtures ranges from 0.01 to 10% by weight, preferably from 0.05 to 5% by weight, more preferably from 0.1 to 1% by weight, better still from 0.1 to 0.5% by weight relative to the total weight of the composition.

[0180] The composition according to the invention may further comprise at least one organic solvent.

[0181] As organic solvent, examples that may be mentioned are lower alkanols in CrC 4, such as ethanol and isopropanol; polyols and polyol ethers such as 2-butoxyethanol, 1,2-hexanediol, propylene glycol, pentylene glycol, propylene glycol monomethyl ether, diethylene glycol monoethyl ether and monomethyl ether, as well as aromatic alcohols, in particular aromatic monoalcohols such as benzyl alcohol, phenoxyethanol, and mixtures thereof.

[0182] The organic solvents may be present in a total amount of between 0.01 and 50% by weight, preferably between 0.05 and 30% by weight, more preferably between 0.1 and 10% by weight, even more preferably between 0.1 and 3% by weight relative to the total weight of the composition.

[0183] The composition according to the invention may comprise water, preferably at a content ranging from 40 to 95% by weight, better still from 60 to 92% by weight, even better still from 70 to 90% by weight relative to the total weight of the composition. Additives

[0184] The composition according to the invention may contain any adjuvant or additive usually used.

[0185] Among the additives that may be used, mention may be made of reducing agents, softeners, moisturizing agents, UV filters, solubilizers, perfumes, proteins, vitamins, preservatives, fatty substances and their mixtures.

[0186] The pH of the composition according to the invention, when it is aqueous, advantageously varies from 5 to 9, preferably from 6 to 8, more preferably from 6.5 to 7.5.

[0187] 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, sulfonic acids.

[0188] The present invention also relates to a cosmetic treatment method, preferably keratin materials, in particular human keratin materials such as the scalp and hair, comprising the application to said keratin materials of the composition according to the invention.

[0189] Another object of the present invention is the use of the composition according to the invention for the cosmetic treatment, in particular of keratin materials, in particular human keratin materials such as the scalp, or scalp, and the hair.

[0190] Another object of the present invention is the use of the composition according to the invention to maintain or even restore the balance of the microbial flora of the scalp.

[0191] The present invention will now be described more specifically by way of examples, which are in no way limiting of the scope of the invention. However, the examples make it possible to support specific characteristics, variations, and preferred embodiments of the invention. EXAMPLES

[0192] Compositions A1 to A3, as described in Table 1 below, were prepared: the quantities are expressed in g of active material (% MA) unless otherwise stated.

[0193] [Tables] Compositions Al (invention) A2 (invention) A3 (comparative) Sodium propionate 1.5 1.5 1.5 Sodium laureth sulfate 8.4 8.4 8.4 Coco-betaine 3.0 3.0 3.0 Hydroxypropyl guar hydroxy-propyltrimonium chloride 0.15 0.15 0.15 Tocopherol 0.5 1.0 - Hydroxyacetophenone 1.0 1.0 1.0 Pentylene glycol 1.0 1.0 1.0 NaCl 0.6 0.6 0.6 Preservatives Qs Qs Qs Water Qsp 100 Qsp 100 Qsp 100

[0194] Thus, compositions A1 and A2 are compositions according to the invention. Composition A3 is a comparative composition. Smooth to the touch evaluation

[0195] Compositions A1, A2 and A3 were applied to strands of moderately bleached Caucasian hair, previously washed with shampoo and rinsed (1 g strands, 27 cm).

[0196] 0.4 g of composition per g of hair was then applied and rinsed; the locks were then dried in an oven (15 minutes, 60°C), then the measurement was taken.

[0197] The method consists of measuring the friction forces of a lock of hair as it moves (in the root / tip direction) at a constant speed, between two pads clamping it at constant compression. This method thus makes it possible to evaluate the "smoothness to the touch" by mimicking the passage of two fingers along a lock of hair.

[0198] The lower the forces required to travel the length of the strand, the smoother the surface condition of the hair.

[0199] The measurements are taken on 6 strands each time.

[0200] The results regarding smooth touch are summarized in Table 2 below. (average force in newtons (N)).

[0201] [Tables2] Composition Al (inv.) A2 (inv.) A3 (comp.) Mean (N) 1.74 1.83 2.24 Standard deviation 0.16 0.09 0.14

[0202] Furthermore, an Anova Tukey statistical test leads to p-values ​​of 0.03 (A1 vs A3) and 0.02 (A2 vs A3).

[0203] Compositions A1 and A2 according to the invention lead to significantly lower average forces than comparative composition A3, and therefore to a better smooth feel.

Claims

Claims ^Claim 1] Composition comprising: a) at least one agent chosen from acids comprising at least one linear or branched, saturated or unsaturated aliphatic chain containing from 3 to 5 carbon atoms and their salts; b) at least 1.2% by weight of at least one antioxidant agent relative to the total weight of the composition. ^Claim 2] Composition according to claim 1, characterized in that the agent a) is chosen from propionic acid, butyric acid, valeric acid, their salts and their mixtures, preferably from the salts of propionic acid, preferably from the calcium salts, the sodium salts, the magnesium salts, the potassium salts of propionic acid and their mixtures, more preferably from sodium propionate.^Claim 3] Composition according to claim 1 or 2, characterized in that the total content of agent(s) a) ranges from 0.1 to 20% by weight, preferably from 0.1 to 10% by weight, more preferably from 0.5 to 5% by weight, even more preferably from 0.5 to 3% by weight relative to the total weight of the composition.^Claim 4] Composition according to any one of the preceding claims, characterized in that the agent(s) b) are chosen from tocopherol and its esters, ascorbic acid, its salts and its derivatives, retinol and its esters, butylhydroxytoluene and butylhydroxyanisole, N,N'-bis(3,4,5-trimethoxybenzyl) ethylenediamine and its salts, erythorbic acid and its salts, baicalin; the compounds corresponding to the following formula (F): O (F'' II R^R' in which: - R is a substituted or unsubstituted aromatic cycle, preferably substituted by one or more alkyl, hydroxyl, amino, and / or thiol groups; - R' is a linear, branched or cyclic alkyl chain, comprising from 1 to 15 carbon atoms, substituted or unsubstituted; preferably among hydroxyacetophenones; and their mixtures, preferably among tocopherol and its esters, in particular acetate of. tocopherol, ascorbic acid, its salts and its derivatives, in particular its esters and their mixtures, hydroxyacetophenones, in particular p-hydroxyacetophenone, more preferably among tocopherol and its esters, in particular tocopherol acetate, hydroxyacetophenones, in particular p-hydroxyacetophenone and their mixtures.

5. Composition according to any one of the preceding claims, characterized in that the total content of agent(s) b) ranges from 1.2 to 20% by weight, preferably from 1.3 to 10% by weight, more preferably from 1.4 to 5% by weight, even more preferably from 1.5 to 3% by weight relative to the total weight of the composition.

6. Composition according to any one of the preceding claims, characterized in that it further comprises c) at least one anionic surfactant and / or at least one amphoteric or zwitterionic surfactant, as well as their mixtures.

7. Composition according to the preceding claim, characterized in that the anionic surfactant(s) are chosen from sodium, triethanolamine, magnesium or ammonium alkyl(C10-C22)sulfates, oxyethylenated sodium, triethanolamine, ammonium or magnesium alkyl(C10-C22)ethersulfates, and mixtures thereof, more preferably from sodium, triethanolamine, ammonium or magnesium alkyl(C10-C22)ethersulfates, better still from sodium alkyl(C10-C22)ethersulfates and mixtures thereof.

8. Composition according to claim 6 or 7, characterized in that the amphoteric or zwitterionic surfactant(s) are chosen from alkyl(C8-C2o)betaines, alkyl(C8-C2o)sulfobetaines, alkyl(C8-C20)amidoalkyl(C3-C8)betaines, alkyl(C8-C20)amidoalkyl(C6-C8)sulfobetaines, and mixtures thereof, more preferably chosen from alkyl(C8-C20)betaines, alkyl(C8-C20)amidoalkyl(C3-C8)betaines and mixtures thereof, more preferably still from alkyl(C8-C20)betaines.

9. Composition according to any one of claims 6 to 8, characterized in that the total content of anionic and / or amphoteric surfactant(s) ranges from 1 to 50% by weight, preferably from 5 to 30% by weight, more preferably from 10 to 20% by weight relative to the total weight of the composition.

10. Composition according to any one of the preceding claims, characterized in that it further comprises d) at least one ca- polymer cationic, preferably chosen from cationic polysaccharides and their mixtures, preferentially from cationic galactomannan gums and their mixtures, more preferentially from cationic guar gums and their mixtures.

11. Cosmetic treatment process, preferably of keratin materials, in particular human keratin materials such as the scalp, or scalp, and hair, comprising the application to said keratin materials of at least one composition as defined in any one of the preceding claims.

12. Use of at least one composition as defined in any one of claims 1 to 10, for cosmetic treatment, in particular of keratin materials, in particular human keratin materials such as the scalp, or scalp, and hair.

13. Use of at least one composition as defined in any one of claims 1 to 10, for maintaining or even restoring the balance of the microbial flora of the scalp.