Anhydrous cosmetic composition comprising a polyol, a monool, a fatty amine and at least 0.1% of a carboxylic acid

Abstract

The present invention relates to an anhydrous cosmetic composition comprising: (i) one or more polyols, (ii) one or more monohydric alcohols containing from 2 to 6 carbon atoms, (iii) one or more fatty amines, and (iv) at least 0.1% by weight, relative to the total weight of the composition, of one or more carboxylic acids containing from 1 to 6 carbon atoms. The present invention also relates to a cosmetic method for treating keratin materials such as hair, which comprises applying such a composition to said keratin materials.

Description

[0001] The present invention relates to a cosmetic composition comprising one or more monohydric alcohols and one or more polyhydric alcohols and also one or more fatty amines and one or more carboxylic acids; the present invention also relates to a cosmetic method for treating keratin fibers, in particular human keratin fibers such as hair, using said cosmetic composition.

[0002] Hair is usually damaged and brittle by the action of external atmospheric factors such as light and bad weather and also by mechanical or chemical treatments such as brushing, combing, dyeing, bleaching, permanent waving and / or relaxing or even repeated washing.

[0003] As a result, hair is damaged by these various factors and may become dry, rough, brittle or dull over time, especially in fragile areas and more specifically at the ends.

[0004] In order to overcome these drawbacks, it is common practice to resort to hair care treatments using compositions that condition the hair, in particular to give it satisfactory cosmetic properties in terms of smoothness, shine, softness, flexibility, brightness, natural feel and good detangling properties. These hair care compositions, intended to be applied regularly to the hair, may be, for example, conditioners, masks or serums, and may be in the form of gels, hair washes or treatment creams, which may be more or less viscous.

[0005] The products available on the market generally have a thick texture and are difficult to apply and spread throughout the hair. As a result, users find these products rather unpleasant to use.

[0006] Furthermore, users are increasingly looking for products which contain ingredients predominantly of natural origin.

[0007] The object of the present invention is to propose hair compositions which are easy to use, in particular easy to apply to the hair, and which provide keratin fibers with good properties, in particular sensory and care properties, while at the same time comprising predominantly ingredients of natural origin.

[0008] Preferably, the composition according to the invention does not comprise (0%) any surfactant carrying a quaternary ammonium group, such as for example dimethyldialkylammonium or trimethylalkylammonium compounds having an alkyl chain length from C8 to C22.

[0009] Preferably, the composition according to the invention also does not comprise (0%) any cationic polymers, especially cationic polymers bearing vinyl units.

[0010] A subject of the present invention is therefore an anhydrous cosmetic composition comprising:

[0011] (i) one or more polyols,

[0012] (ii) one or more monohydric alcohols containing 2 to 6 carbon atoms,

[0013] (iii) one or more fatty amines, and

[0014] (iv) at least 0.1% by weight, relative to the total weight of the composition, of one or more carboxylic acids containing from 1 to 6 carbon atoms.

[0015] A subject of the present invention is also a cosmetic method for treating keratin materials, in particular human keratin fibres such as the hair, which method comprises applying to said keratin materials a composition as defined above.

[0016] The composition according to the invention is advantageously in the form of a transparent composition, especially having a transmittance measured, for example at a wavelength of 600 nm, of at least 80%, better still at least 90%, even better still at least 95%.

[0017] The composition according to the invention has good working qualities and, in particular, sufficient viscosity to enable it to be easily applied and spread on the hair.

[0018] In particular, the composition according to the invention has a viscosity which may range from 10 mPa.s to 10 000 mPa.s at 25° C. The viscosity may be measured with a Brookfield RVT viscometer at 20 rpm (revolutions per minute) at 25° C., the spindle size being selected according to the manufacturer's standard recommendations, typically ranging from disc spindle No. 1 to No. 4.

[0019] Furthermore, the composition according to the invention imparts to the keratin fibers good cosmetic properties, such as a uniform soft, smooth feel and also flexibility. The keratin fibers are also easy to untangle and are not weighed down by the composition.

[0020] Other subjects, features, aspects and advantages of the present invention will become even more clear after reading the following description and examples.

[0021] In the text below, unless otherwise indicated, the limits of a range of values ​​are included in the range, especially in the expressions "between" and "ranging from to".

[0022] The expression "at least one" used in the present specification is equivalent to the expression "one or more".

[0023] The compositions according to the invention are anhydrous.

[0024] The term "anhydrous" means that the composition contains no more than 5% water, preferably no more than 2% water, better still no more than 1% water, even better still no more than 0.5% water by weight, and preferably contains no water (0%), relative to the total weight of the final composition.

[0025] 1 / Polyol

[0026] The composition according to the invention comprises one or more polyols.

[0027] Preferably, the polyols are linear and saturated; they may contain from 2 to 6 hydroxyl OH groups, in particular from 2 to 4, better still from 2 to 3 and preferably 2 OH groups.

[0028] They may contain from 2 to 8 carbon atoms and especially from 2 to 6 carbon atoms.

[0029] They do not contain any alkylene oxide or glycerol-based groups.

[0030] They are advantageously liquid at room temperature (25° C.) and atmospheric pressure (1 atm).

[0031] Preferably, the polyols according to the invention contain two OH groups (diols) and 2 to 6 carbon atoms and are linear and saturated.

[0032] Preferably, they may be chosen from propylene glycol (propane-1,2-diol), propane-1,3-diol, butanediol (butane-1,3-diol), pentanediol (pentane-1,2-diol), and mixtures thereof. Very preferably, the polyol is propylene glycol.

[0033] The composition according to the invention preferably contains a total amount of said polyols ranging from 10% to 70% by weight, better still from 20% to 60% by weight, or even from 25% to 55% by weight, preferably from 30% to 50% by weight and even better still from 35% to 45% by weight relative to the total weight of the composition.

[0034] In a preferred embodiment, the composition according to the invention comprises a total amount of one or more saturated linear C2-C6 diols ranging from 10% to 70% by weight, better still from 20% to 60% by weight, or even from 25% to 55% by weight, preferably from 30% to 50% by weight and even better still from 35% to 45% by weight relative to the total weight of the composition.

[0035] Preferably, the composition according to the invention comprises a total amount of propylene glycol ranging from 10% to 70% by weight, better still from 20% to 60% by weight, or even from 25% to 55% by weight, preferably from 30% to 50% by weight and even better still from 35% to 45% by weight relative to the total weight of the composition.

[0036] 2 / Monohydric alcohol

[0037] The composition according to the invention comprises one or more monohydric alcohols comprising from 2 to 6 carbon atoms.

[0038] Preferably, the monohydric alcohols are linear and saturated. They may contain from 2 to 4 carbon atoms. They do not contain any oxyalkylene or glycerol-based groups.

[0039] Preferably, the monohydric alcohol is selected from ethanol, propanol, isopropanol and butanol, and mixtures thereof, preferably ethanol.

[0040] The composition according to the invention preferably comprises a total amount of said C2-C6 monoalcohols ranging from 10 to 70% by weight, better still from 20 to 60% by weight or even from 25 to 55% by weight relative to the total weight of the composition.

[0041] The composition according to the invention preferably comprises a total amount of ethanol ranging from 10% to 70% by weight, better still from 20% to 60% by weight or even from 25% to 55% by weight relative to the total weight of the composition.

[0042] Preferably, the weight ratio between the total amount of polyols (i) and the total amount of C2-C6 monools (ii) is advantageously between 0.5 and 2, better still between 0.7 and 1.5.

[0043] Preferably, the total amount of polyol (i) and C2-C6 monool (ii) ranges from 30 to 99% by weight, preferably from 50 to 98% by weight and better still from 60 to 95% by weight relative to the total weight of the composition.

[0044] 3 / Fatty amine

[0045] The composition according to the invention comprises one or more fatty amines.

[0046] The term "fatty amine" means a polyamine comprising at least one optionally (poly)oxyalkylenated primary, secondary or tertiary amine functional group, or a salt thereof and comprising at least one C 6 -C 30 Compounds based on hydrocarbon chains.

[0047] Preferably, the fatty amines according to the invention are not (poly)oxyalkylenated.

[0048] The fatty amines that can be used in the context of the present invention can be fatty amidoamines, tertiary fatty amines or mixtures of these compounds.

[0049] Fatty amines that may be mentioned thus include fatty amidoamines, and especially fatty amidoamines in which the C6-C30 fatty chain may be carried by an amine group or an amide group.

[0050] The term "amidoamine" means a compound comprising at least one amide functional group and at least one primary, secondary or tertiary amine functional group.

[0051] The term "fatty amidoamine" means a fatty amine comprising at least one C 6 -C 30 Amidoamines based on hydrocarbon chains.

[0052] Preferably, the fatty amidoamines according to the invention are not quaternized.

[0053] Preferably, the fatty amidoamines according to the invention are not (poly)oxyalkylenated.

[0054] Among the amidoamines that can be used in the context of the present invention, mention may be made of amidoamines of formula A: RCONHR"N(R') 2 (A)

[0055] in:

[0056] -R represents a monovalent hydrocarbon-based group containing from 5 to 29 carbon atoms, preferably from 7 to 23 carbon atoms, and in particular a linear or branched, saturated or unsaturated C 5 -C 29 And preferably C 7 -C 23 Alkyl, which is optionally substituted by one or more hydroxyl groups (OH); preferably a linear or branched C 5 -C 29 And also better C 7 -C 23 Alkyl, or C 5 -C 29 And also better C 7 -C 23 Alkenyl; preferably straight chain or branched C 7 -C 23 groups which are saturated or contain diunsaturation (C=C);

[0057] -R" represents a divalent hydrocarbon-based group containing 1 to 6 carbon atoms, preferably 2 to 4 carbon atoms and better still 3 carbon atoms, said group being preferably linear; and

[0058] -R', which may be the same or different, represents a linear or branched, saturated or unsaturated monovalent hydrocarbon-based group containing from 1 to 6 carbon atoms, preferably from 1 to 4 carbon atoms, said group being preferably a methyl or ethyl group.

[0059] Preferably, in formula (A):

[0060] -R' are identical and represent a methyl group;

[0061] -R" represents a straight-chain divalent hydrocarbon-based group containing 2 to 4 carbon atoms and better still 3 carbon atoms; and

[0062] -R represents a C7-C23 linear or branched hydrocarbon-based group which is saturated or contains unsaturation (C=C).

[0063] The amidoamine of formula (A) may be selected from the following compounds, alone or in mixture:

[0064] -oleamidopropyl dimethylamine,

[0065] - stearamidopropyl dimethylamine, in particular the product sold under the name Lexamine S13 by Inolex Chemical Company,

[0066] -isostearylamidopropyl dimethylamine,

[0067] -Stearamidoethyldimethylamine,

[0068] -Lauroamidopropyl dimethylamine,

[0069] -Myristamidopropyl dimethylamine,

[0070] -Behenamidopropyl dimethylamine,

[0071] -Dilinoleamidopropyl dimethylamine,

[0072] -Palmitamidopropyl dimethylamine,

[0073] -Ricinoleamidopropyl dimethylamine,

[0074] -Soyamidopropyl dimethylamine,

[0075] - Avocadoamidopropyl dimethylamine,

[0076] - Cocamidopropyl dimethylamine,

[0077] - minkamidopropyl dimethylamine,

[0078] -oatamidopropyldimethylamine,

[0079] -Sesamidopropyl dimethylamine,

[0080] - talloleamidopropyl dimethylamine,

[0081] -Oliveamidopropyl dimethylamine,

[0082] -Palmitamidopropyl dimethylamine,

[0083] - stearamidoethyldiethylamine,

[0084] -Rapeseed oleamidopropyl dimethylamine.

[0085] Preferably, the fatty amidoamine is selected from oleamidopropyl dimethylamine, stearamidopropyl dimethylamine, rapeamidopropyl dimethylamine and mixtures thereof.

[0086] Fatty amines that may also be mentioned include tertiary fatty amines, and in particular tertiary fatty amines of formula (B): RN(R') 2

[0087] in:

[0088] -R represents a monovalent hydrocarbon-based group containing from 6 to 30 carbon atoms, preferably from 8 to 24 carbon atoms, and in particular a linear or branched, saturated or unsaturated C 6 -C 30 And preferably C 8 -C 24 Alkyl; preferably straight chain or branched C 6 -C 30 And also better C 8 -C 24 Alkyl; or linear or branched C 6 -C 30 And preferably C 8 -C 24 alkenyl; and

[0089] -R', which may be the same or different, represents a linear or branched, saturated or unsaturated monovalent hydrocarbon-based group containing from 1 to 6 carbon atoms, preferably from 1 to 4 carbon atoms, said group being preferably a methyl group.

[0090] As fatty amines corresponding to formula B, the following compounds may be mentioned: dimethyl laurylamine, dimethylbehenylamine, dimethylcocoamine, dimethylmyristylamine, dimethylpalmitylamine, dimethylstearylamine, dimethyltallowamine, dimethylsoyaamine and mixtures thereof.

[0091] Preferably, the composition according to the invention comprises one or more fatty amines chosen from fatty amidoamines, especially fatty amidoamines corresponding to formula (A) as defined above, and more particularly chosen from oleamidopropyldimethylamine, stearamidopropyldimethylamine, rapeamidopropyldimethylamine and mixtures thereof.

[0092] The composition according to the invention preferably comprises a total amount of said fatty amine ranging from 0.1% to 15% by weight, better still from 0.5% to 10% by weight or even from 1% to 5% by weight relative to the total weight of the composition.

[0093] In a preferred embodiment, the composition according to the invention comprises a total amount of said fatty amidoamine, in particular of formula (A) as defined above, ranging from 0.1% to 15% by weight, better still from 0.5% to 10% by weight or even from 1% to 5% by weight relative to the total weight of said composition.

[0094] Better still, the composition according to the invention comprises a total amount of fatty amidoamines chosen from oleamidopropyl dimethylamine, stearamidopropyl dimethylamine, rapeamidopropyl dimethylamine and mixtures thereof, ranging from 0.1% to 15% by weight, better still from 0.5% to 10% by weight or even from 1% to 5% by weight relative to the total weight of the composition.

[0095] 4 / Carboxylic acid

[0096] The composition according to the invention comprises one or more carboxylic acids corresponding to the following formula (I):

[0097]

[0098] in:

[0099] - n is an integer between 0 and 10, better still between 1 and 5, even better still n=1 or 2, preferably n=2;

[0100] -A is a saturated or unsaturated linear, branched, cyclic or even aromatic monovalent hydrocarbon-based group (when n=0) or a polyvalent hydrocarbon-based group (when n is not 0), said group comprising from 1 to 30 carbon atoms, preferably from 1 to 12 carbon atoms, and better still from 1 to 6 carbon atoms, said group being optionally substituted by one or more hydroxyl (OH) and / or amino groups (NR1R2, wherein R1 and R2 independently represent H or C1-C4 alkyl).

[0101] Preferably, A is monovalent or polyvalent (C 1 -C 6) an alkylene group or a phenylene group, which is optionally substituted by one or more hydroxyl groups and / or amino groups.

[0102] Preferably, the carboxylic acid of formula (I) is an α-hydroxy acid wherein A is (C 1 -C 6 ) alkylene and also preferably (C 2 -C 4 ) an alkylene group or a phenylene group, which is substituted by 1 or 2 hydroxyl groups and / or amino groups, preferably 1 hydroxyl group; and n=0 to 2.

[0103] Mention may be made in particular of carboxylic acids of formula (I) in which:

[0104] -n=0 and A is monovalent (C 1 -C 6 ) alkyl and especially (C 2 -C 4 ) alkyl, which is optionally substituted by one or more hydroxyl (OH), especially 1 or 2 OH, preferably 1 OH;

[0105] - n=0 and A is phenyl substituted by 1 OH group; or

[0106] - n = 1 or 2 and A is divalent or trivalent (C 1 -C 6 ) alkyl and also preferably (C 2 -C 4 ) alkyl, which is substituted by one or more hydroxyl and / or amino groups, especially 1 or 2 OH groups, preferably 1 OH group.

[0107] Preferably, the carboxylic acid may be selected from:

[0108] -Citric acid (n=2 and A trivalent=-CH2-CHOH-CH2-)

[0109] -Salicylic acid (n=0 and A=phenyl substituted with OH)

[0110] -Lactic acid (n=0 and A monovalent=-CH(OH)CH3)

[0111] - tartaric acid (n = 1 and A divalent = -CH(OH)-CH(OH)-) and

[0112] -Glutamic acid (n=1 and A divalent=-CH(NH2)-CH2-CH2-).

[0113] Even more preferably, the carboxylic acid is citric acid.

[0114] The composition according to the invention preferably comprises a total amount of said carboxylic acid greater than or equal to 0.1% by weight, better still greater than or equal to 0.2% by weight, even better still greater than or equal to 0.3% by weight and preferably greater than or equal to 0.4% by weight relative to the total weight of the composition.

[0115] The composition according to the invention preferably comprises a total amount of said carboxylic acid ranging from 0.1% to 5% by weight, better still ranging from 0.2% to 2.5% by weight, even better still from 0.3% to 1.5% by weight and preferably from 0.4% to 1% by weight relative to the total weight of the composition.

[0116] In a preferred embodiment, the composition according to the invention comprises a total amount of citric acid ranging from 0.1% to 5% by weight, better still from 0.2% to 2.5% by weight, even better still from 0.3% to 1.5% by weight and preferably from 0.4% to 1% by weight relative to the total weight of the composition.

[0117] 5 / Preferably solid fatty alcohol

[0118] The composition according to the invention may advantageously comprise one or more fatty alcohols, preferably one or more solid fatty alcohols.

[0119] The solid fatty alcohols that can be used are solid at room temperature (25° C.) and atmospheric pressure (1 atm.) and are water-soluble, ie they have a solubility in water at 25° C., 1 atm of less than 1% by weight and preferably less than 0.5% by weight.

[0120] The term "fatty alcohol" means an aliphatic alcohol containing from 8 to 40 carbon atoms and containing at least one hydroxyl group OH. These fatty alcohols are neither oxyalkylenated nor glycerolated.

[0121] These fatty alcohols are distinct from the polyhydric and monohydric alcohols described above.

[0122] Preferably, the solid fatty alcohol has the structure R—OH, in which R represents a linear alkyl group optionally substituted by one or more hydroxyl groups, this alkyl group comprising from 8 to 40, better still from 10 to 30 or even from 12 to 24 carbon atoms.

[0123] Preferably, the solid fatty alcohol has the structure R—OH, in which R represents a linear alkyl group (which is not substituted by one or more OH groups) containing from 8 to 40, better still from 10 to 30 or even from 12 to 24 carbon atoms.

[0124] The solid fatty alcohols that can be used can be selected from the following, alone or in mixture:

[0125] -Lauryl alcohol (1-dodecanol);

[0126] -Myristyl alcohol (1-tetradecanol);

[0127] - Cetyl alcohol (1-hexadecanol);

[0128] -stearyl alcohol (1-octadecyl alcohol);

[0129] -Arachidyl alcohol (1-eicosanol);

[0130] -Behenyl alcohol (1-docosanol);

[0131] - wood wax alcohol (1-tetracosanol);

[0132] - wax alcohol (1-hexacosanol);

[0133] -Mondanol (1-octacosanol);

[0134] - Beeswax alcohol (1-triacontanol).

[0135] Preferably, the solid fatty alcohol is selected from myristyl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol and mixtures thereof, such as cetylstearyl alcohol or cetearyl alcohol.

[0136] The composition according to the invention preferably comprises a total amount of said fatty alcohol ranging from 0.5% to 20% by weight and preferably from 1% to 18% by weight relative to the total weight of the composition.

[0137] Better still, the composition according to the invention preferably comprises a total amount of said solid fatty alcohols ranging from 0.5% to 20% by weight and preferably from 1% to 18% by weight relative to the total weight of the composition.

[0138] 6 / Other ingredients

[0139] The composition according to the invention may also advantageously comprise one or more fatty substances other than the above fatty alcohols and which are advantageously liquid, better still chosen from triglycerides of vegetable or synthetic origin, in particular vegetable oils, and esters of fatty acids and / or fatty alcohols, and also mixtures thereof.

[0140] Among the triglycerides of vegetable or synthetic origin, mention may be made of liquid fatty acid triglycerides containing from 6 to 30 carbon atoms, such as heptanoic or caprylic triglycerides, or alternatively, for example, sunflower oil, corn oil, soybean oil, marrow oil, grapeseed oil, sesame oil, hazelnut oil, almond oil, macadamia oil, arara oil, sunflower oil, castor oil, avocado oil, jojoba oil, shea butter and caprylic / capric triglycerides (for example those sold by Stéarinerie Dubois or by Dynamit Nobel under the name 810, 812 and those sold by 818).

[0141] As regards the esters of fatty acids and / or fatty alcohols which are advantageously different from the abovementioned triglycerides, mention may be made in particular of saturated or unsaturated, linear or branched C 1 -C 26 Aliphatic monobasic or polybasic acids and saturated or unsaturated, straight-chain or branched C 1 -C 26 Esters of aliphatic mono- or polyhydric alcohols, these esters more particularly have a total carbon number greater than or equal to 10.

[0142] Among the monoesters, mention may be made of dihydroabietyl behenate; octyldodecyl behenate; isocetyl behenate; cetyl lactate; C-lactate; 12 -C 15 Alkyl esters; Isostearyl lactate; Lauryl lactate; Linoleyl lactate; Oleyl lactate; (iso)stearyl octanoate; Isocetyl octanoate; Octyl octanoate; Cetyl octanoate; Decyl oleate; Isocetyl isostearate; Isocetyl laurate; Isocetyl stearate; Isodecyl octanoate; Isodecyl oleate; Isononyl isononanoate; Isostearyl palmitate; Methyl acetyl ricinoleate; Myristyl stearate; Octyl isononanoate; 2-ethylhexyl isononanoate; Octyl palmitate; Octyl nonanoate; Octyl stearate; Octyldodecyl erucate; Oleyl erucate; Ethyl and isopropyl palmitate;

[0143] 2-Ethylhexyl palmitate; 2-octyldecyl palmitate; alkyl myristates such as isopropyl myristate, butyl myristate, cetyl myristate, 2-octyldodecyl myristate, myristyl myristate or stearyl myristate; hexyl stearate; butyl stearate; isobutyl stearate; dioctyl malate; hexyl laurate; 2-hexyldecyl laurate.

[0144] Still in the context of this variant, you can also use C 4 -C 22 Dicarboxylic acid or tricarboxylic acid and C 1 -C 22Esters of alcohols and monocarboxylic acids, dicarboxylic acids or tricarboxylic acids with C 2 -C 26 Esters of dihydric, trihydric, tetrahydric or pentahydric alcohols.

[0145] Mention may especially be made of: diethyl sebacate; diisopropyl sebacate; diisopropyl adipate; di-n-propyl adipate; dioctyl adipate; diisostearyl adipate; dioctyl maleate; glyceryl undecylenate; octyldodecyl stearate; pentaerythritol monoricinoleate; pentaerythritol tetraisononanoate; pentaerythritol tetranonanoate; pentaerythritol tetraisostearate; pentaerythritol tetraoctanoate; propylene glycol dioctanoate; propylene glycol dicaprate; tridecyl erucate; triisopropyl citrate; triisostearyl citrate; glyceryl trilactate; glyceryl tricaprylate; trioctyldodecyl citrate; trioleyl citrate; propylene glycol dioctanoate; neopentyl glycol diheptanoate; diethylene glycol diisononanoate; and polyethylene glycol distearate.

[0146] Among the esters mentioned above, preference is given to using ethyl palmitate, isopropyl palmitate, myristyl palmitate, cetyl palmitate or stearyl palmitate, 2-ethylhexyl palmitate, 2-octyldecyl palmitate, alkyl myristates (e.g. isopropyl myristate, butyl myristate, cetyl myristate or 2-octyldodecyl myristate), hexyl stearate, butyl stearate, isobutyl stearate; dioctyl malate, hexyl laurate, 2-hexyldecyl laurate, isononyl isononanoate or cetyl octanoate.

[0147] Preferably, the liquid fatty substance other than fatty alcohol is chosen from triglycerides of vegetable or synthetic origin.

[0148] The composition according to the invention preferably comprises a total amount of said fatty substances other than fatty alcohols ranging from 0.1% to 15% by weight and preferably from 0.5% to 10% by weight relative to the total weight of the composition.

[0149] Preferably, the composition according to the invention comprises a total amount of said liquid fatty substances other than fatty alcohols, and especially said triglycerides of vegetable or synthetic origin, ranging from 0.1% to 15% by weight, preferably from 0.5% to 10% by weight relative to the total weight of the composition.

[0150] A subject of the present invention is also a cosmetic method for treating keratin fibres, in particular human keratin fibres such as the hair, said cosmetic method comprising applying to said keratin fibres a composition as defined previously.

[0151] The cosmetic compositions according to the invention can be applied to dry or wet keratin fibers, preferably wet keratin fibers which have previously been optionally shampooed.

[0152] Advantageously, the composition is left on the keratin fibres for a leave-on time ranging from 1 minute to 20 minutes.

[0153] The keratin fibers are preferably rinsed after application of the cosmetic composition, for example with water.

[0154] The method according to the invention is in particular a hair treatment method which makes it possible, for example, to provide care and / or conditioning to keratin fibres, in particular to the hair, in particular to provide detangling, smoothness and / or flexibility.

[0155] The following examples serve to illustrate the invention but are not limiting in nature.

[0156] Unless otherwise indicated, in the following examples, the amounts are indicated as weight percent of active material (% AM) relative to the total weight of the composition.

[0157] Example 1

[0158] Compositions A and B according to the invention were prepared from the ingredients (g % AM) whose contents are indicated in the following table:

[0159] [Table 1]

[0160] Composition A Composition B Stearamidopropyl dimethylamine 3 3 Citric acid 0.51 0.51 Caprylic / capric triglyceride 0.9 9.8 Cetearyl Alcohol - 12.5 Myristyl Alcohol 2 3.4 Ethanol 50 30 Propylene glycol Appropriate amount up to 100 Appropriate amount up to 100

[0161] Clear liquid compositions are obtained which are easily applied to damp or wet hair, which has preferably been previously washed; these compositions can be used as rinse-out conditioners.

[0162] After applying the composition and rinsing with water, the hair was found to be more pliable and to have a smooth feel; the hair was also shiny and easy to detangle.

Claims

1. An anhydrous cosmetic composition comprising: (i) one or more polyols in a total amount ranging from 10% to 70% by weight relative to the total weight of the composition, wherein the polyol is selected from propylene glycol, propane-1,3-diol, butanediol, pentanediol, and mixtures thereof; (ii) one or more monohydric alcohols in a total amount ranging from 10% to 70% by weight relative to the total weight of the composition, wherein the monohydric alcohol is selected from ethanol, propanol, isopropanol, butanol and mixtures thereof; (iii) a total amount of one or more fatty amines ranging from 0.1% to 15% by weight relative to the total weight of the composition, wherein the fatty amine is selected from oleamidopropyl dimethylamine, stearamidopropyl dimethylamine, rapeamidopropyl dimethylamine and mixtures thereof; (iv) at least 0.1% by weight, relative to the total weight of the composition, of one or more carboxylic acids chosen from citric acid, salicylic acid, lactic acid, tartaric acid and glutamic acid; wherein the composition has a viscosity of from 10 mPa.s to 10000 mPa.s at 25°C; The total amount of polyol (i) and C2-C4-hydric alcohol (ii) ranges from 50 to 98% by weight relative to the total weight of the composition; The anhydrous cosmetic composition comprises no more than 0.5% by weight of water.

2. The composition of claim 1, wherein the propylene glycol is propane-1,2-diol.

3. The composition of claim 1, wherein the butanediol is butane-1,3-diol.

4. The composition of claim 1, wherein the pentanediol is pentane-1,2-diol.

5. The composition of claim 1, wherein the polyol is propylene glycol.

6. The composition of claim 1, comprising said polyol in a total amount ranging from 35% to 45% by weight relative to the total weight of said composition.

7. The composition of claim 1, comprising a polyol in an amount ranging from 35% to 45% by weight relative to the total weight of the composition.

8. The composition according to claim 1, comprising propylene glycol in a total amount ranging from 10% to 70% by weight relative to the total weight of the composition.

9. The composition of claim 1, comprising propylene glycol in a total amount ranging from 35% to 45% by weight relative to the total weight of the composition.

10. The composition according to claim 1, wherein The monohydric alcohol is ethanol.

11. The composition of claim 1 comprising ethanol in a total amount ranging from 10% to 70% by weight relative to the total weight of the composition.

12. The composition of claim 1, wherein The weight ratio between the total amount of polyols (i) and the total amount of monools (ii) is between 0.5 and 2.

13. The composition of claim 1, comprising said fatty amine in a total amount ranging from 0.1% to 15% by weight relative to the total weight of said composition.

14. The composition of claim 1, wherein the carboxylic acid is citric acid.

15. The composition of claim 1, comprising said carboxylic acid in a total amount greater than or equal to 0.1% by weight relative to the total weight of said composition.

16. The composition of claim 1 comprising said one or more carboxylic acids in a total amount of 0.1% to 5% by weight relative to the total weight of the composition.

17. The composition of claim 1 comprising citric acid in a total amount of 0.1% to 5% by weight relative to the total weight of the composition.

18. The composition of claim 1 comprising one or more fatty alcohols.

19. The composition of claim 1 comprising one or more solid fatty alcohols.

20. The composition of claim 1 comprising one or more solid fatty alcohols having the structure R-OH, wherein R represents a linear alkyl group, optionally substituted with one or more hydroxyl groups, said alkyl group comprising from 8 to 40 carbon atoms.

21. The composition of claim 1 comprising one or more solid fatty alcohols selected from the following, alone or in admixture: -1-dodecanol; -1-Tetradecanol; -1-hexadecanol; -1-octadecyl alcohol; -1-eicosanol; -1-docosanol; -1-Tetracosanol; -1-hexacosanol; -1-octacosanol; -1-triacontanol.

22. The composition according to claim 1, comprising said fatty alcohol in a total amount ranging from 0.5% to 20% by weight relative to the total weight of said composition.

23. The composition according to claim 19, comprising said solid fatty alcohol in a total amount ranging from 0.5% to 20% by weight relative to the total weight of said composition.

24. The composition of claim 18, comprising one or more fatty substances other than the fatty alcohol.

25. The composition of claim 18, comprising one or more fatty substances other than the fatty alcohol, which are liquid.

26. The composition according to claim 18, comprising one or more fatty substances other than said fatty alcohols, chosen from triglycerides of vegetable or synthetic origin.

27. The composition as claimed in claim 18, comprising, in addition to the fatty alcohol, one or more fatty substances chosen from vegetable oils, and esters of fatty acids and / or fatty alcohols, and also mixtures thereof.

28. The composition according to claim 18, comprising one or more fatty substances other than said fatty alcohol, said fatty substances other than said fatty alcohol being present in a total amount ranging from 0.1% to 15% by weight relative to the total weight of said composition.

29. A cosmetic method for treating keratin materials, said cosmetic method comprising applying to said keratin materials a composition as defined in any one of the preceding claims.

30. The cosmetic method of claim 29, wherein the keratin material is hair.

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