Process for conditioning keratin fibers

Abstract

The present invention relates to a process for conditioning keratin fibers, comprising a step of applying a composition on the keratin fibers, wherein the composition comprises: (a) at least one fatty amine; (b) at least one amino-acid type amphoteric surfactant; and (c) at least one phosphoric-acid cross-linked polysaccharide. The process according to the present invention can provide the keratin fibers with improved dry conditioning benefits.

Description

[0001] DESCRIPTION

[0002] TITLE OF INVENTION

[0003] PROCESS FOR CONDITIONING KERATIN FIBERS

[0004] TECHNICAL FIELD

[0005] The present invention relates to a process for conditioning keratin fibers, such as hair. The present invention also relates to a cosmetic composition for conditioning keratin fibers.

[0006] BACKGROUND OF THE INVENTION

[0007] Hair products for conditioning hair in order to achieve softening effect on hair are widely favored by customers. Hair conditioning products are widely used for curing hair damage.

[0008] For example, JP2019-182807A discloses a hair cosmetic composition comprising:

[0009] (a) a phosphate-crosslinked starch derivative;

[0010] (b) a tertiary amine type surfactant; and

[0011] (c) a C3-6 organic acid.

[0012] However, there is still a demand for providing a process for imparting sufficient care feel to keratin fibers, preferably hair, in particular dried hair.

[0013] DISCLOSURE OF INVENTION

[0014] An objective of the present invention is to provide a new process for conditioning keratin fiber, which can provide improved conditioning effects, such as coating effect on the keratin fibers, such as hair, in particular dried hair.

[0015] The above objective of the present invention can be achieved by a process for conditioning keratin fibers, such as hair, comprising a step of an application a composition on the keratin fibers, the composition comprising:

[0016] (a) at least one fatty amine;

[0017] (b) at least one amino-acid type amphoteric surfactant; and

[0018] (c) at least one phosphoric-acid cross-linked polysaccharide.

[0019] The (a) fatty amine may be selected from selected from alkylamidoamines may be represented by the following formula (I):

[0020] RCONH(CH2)nNR1R2(I) wherein

[0021] RCO denotes an acyl group, which may have C6-22 carbon atoms,

[0022] R1and R2denote, independently, a C1-6 alkyl group, and n denotes an integer from 1 to 5.

[0023] The (a) fatty amine may be selected from stearamidopropyl dimethylamine, diethylaminoethylstearamide, dimethylstearamine, dimethylsoyamine, soyamine, tridecylamine, ethyl steary lam ine, ethoxylatedstearylamine, dihydroxyethylstearylamine, arachidylbehenylamine, behenamidopropyl dimethylamine, brassicamidopropyl dimethylamine, and combinations thereof. The (b) amino-acid type amphoteric surfactant may be selected from (Cs- C2o)alkylamphoacetates, (C8-C2o)alkylamphopropionates, (C8-C2o)alkylamphodiacetates, (Cs- C2o)alkylamphodipropionates, and combinations thereof.

[0024] The (b) amino-acid type amphoteric surfactant may be selected from sodium cocoamphoacetate, sodium cocoamphopropionate, disodium cocoamphodiacetate, disodium cocoamphodipropionate, sodium lauroamphoacetate, disodium lauroamphodiacetate, sodium caprylamphoacetate, disodium caprylamphodiacetate, sodium caprylamphoacetate, disodium caprylamphodiacetate, sodium lauroamphopropionate, disodium lauroamphodipropionate, sodium caprylamphopropionate, disodium caprylamphopropionate, sodium caprylomphopropionate, disodium caprylomphodipropionate, lauroamphopropionic acid, lauroamphodipropionic acid, cocoamphopropionic acid, cocoamphodipropionic acid, sodium olivamphoacetate, sodium sweetalmondamphoacetate, sodium ricebranamphoacetate, sodium sunflowerseedamphoacetate, and combinations thereof.

[0025] The (c) phosphoric-acid cross-linked polysaccharide may be selected from phosphoric-acid cross-linked starches.

[0026] The (c) phosphoric-acid cross-linked polysaccharide may be selected from mono-starch phosphates, in which the starch is cross-linked intermolecular such as hydroxypropyl starch phosphate, distarch phosphates, tristarch phosphates, and mixtures thereof.

[0027] The amount of the (a) fatty amine(s) in the composition may range from 1% to 15% by weight, preferably from 2% to 10% by weight, and more preferably from 3% to 5% by weight, relative to the total weight of the composition.

[0028] The amount of the (b) amino-acid type amphoteric surfactant(s) in the composition may range from 0.1% to 10% by weight, preferably from 0.2% to 5% by weight, and more preferably from 0.3% to 2.5% by weight, relative to the total weight of the composition.

[0029] The amount of the (c) phosphoric-acid cross-linked polysaccharide(s) in the composition may range from 0.25% to 10% by weight, preferably from 0.5% to 5% by weight, and more preferably from 0.75% to 2.5% by weight, relative to the total weight of the composition.

[0030] The process according to the present invention may not be a process for cleansing or shampooing keratin fibers.

[0031] The present invention also relates to a composition for conditioning keratin fibers, comprising:

[0032] (a) at least one fatty amine;

[0033] (b) at least one amino-acid type amphoteric surfactant; and

[0034] (c) at least one phosphoric-acid cross-linked polysaccharide.

[0035] The composition according to the present invention may not be a shampoo composition or not a composition for cleaning keratin fibers.

[0036] The composition according to the present invention may comprise anionic surfactants in an amount of less than 20% by weight, preferably less than 10% by weight, more preferably less than 5% by weight, and even more preferably less than 4% by weight, relative to the total weight of the composition, or the composition may be free of any anionic surfactants.

[0037] The composition according to the present invention may comprise amphoteric surfactants other than the (b) amino-acid type amphoteric surfactants in an amount of less than 10% by weight, preferably less than 5% by weight, more preferably less than 3% by weight, and even more preferably less than 2% by weight, relative to the total weight of the composition, or the composition may be free of any amphoteric surfactants other than the (b) amino-acid type amphoteric surfactants.

[0038] DETAILED DESCRIPTION OF THE INVENTION

[0039] After diligent research, the inventors have discovered that a new process for conditioning keratin fibers, preferably hair, in particular dried hair, using a composition comprising a combination of (a) fatty amine, (b) amino-acid type amphoteric surfactant, and (c) phosphoric-acid cross-linked polysaccharide can provide the keratin fibers with improved sensory effects, and thus completed the invention.

[0040] Thus, the present invention relates to a process for conditioning keratin fibers, comprising a step of an application of a composition on the keratin fibers, wherein the composition comprises:

[0041] (a) at least one fatty amine;

[0042] (b) at least one amino-acid type amphoteric surfactant; and

[0043] (c) at least one phosphoric-acid cross-linked polysaccharide.

[0044] The process according to present invention is very preferred for conditioning keratin fibers, such as hair, in particular dried hair, since it can provide the keratin fibers with improved sensory effects with respect to an increased amount of coating and improved feel of softness.

[0045] Hereinafter, the process and composition according to the present invention will be explained in more detail.

[0046] [Process]

[0047] The process according to the present invention is a cosmetic process for conditioning keratin fibers, such as hair. Thus, the process according to the present invention can be a cosmetic process and a non-therapeutic process.

[0048] For the purpose of the present invention, the expression of "conditioning keratin fibers" indicates to conditioning keratin fibers by providing the keratin fibers, preferably hair, with cosmetic effects, such as softness property, and does not indicate cleaning keratin, such as shampooing keratin fibers. Thus, the process according to the present invention is different from a process for cleaning or shampooing keratin fibers.

[0049] In one embodiment of the present invention, the process does not include a step of cleaning and / or shampooing keratin fibers.

[0050] The process according to the present invention comprises a step of an application of a composition comprising:

[0051] (a) at least one fatty amine; (b) at least one amino-acid type amphoteric surfactant; and

[0052] (c) at least one phosphoric-acid cross-linked polysaccharide.

[0053] The step of the application of the composition on the keratin fibers can be performed by any means. For example, the application can be performed by using a hand or any applicators such as a comb or a brush.

[0054] The step of the application of the composition can be conducted after a step of shampooing and rinsing the keratin fibers. In one embodiment of the present invention, at least one step of an optional number of times of shampooing is conducted on the keratin fibers before and / or after the process according to the present invention.

[0055] The keratin fibers to be treated by the process according to the present invention may be wet or dried. In one preferred embodiment of the present invention, the keratin fibers are wet when the process according to the present invention is performed. Thus, the process according to the present invention can be applied to wet keratin fibers.

[0056] It may be possible, after the application of the composition, for the keratin fibers to be left as is for a certain amount of time; typically from 1 second to 10 minutes, preferably from 5 seconds to 5 minutes, and more preferably from 10 seconds to 3 minutes, if necessary, in order to let the composition penetrate into the keratin fibers.

[0057] The process according to the present invention may further comprise a step of rinsing the composition off from the keratin fibers after the step of the application. In one embodiment of the present invention, the keratin fibers are rinsed off with water to rinse the applied composition off the keratin fibers.

[0058] The composition according to the present invention may take various forms, such as a solution, a gel, a lotion, a serum, a suspension, a dispersion, a fluid, a milk, a paste, a cream, a foam, an emulsion (O / W or W / O form), multiple (e.g., W / O / W, polyol / O / W, and O / W / O) emulsions, and the like. It is preferable that the composition according to the present invention be a cream. For the purposes of the present invention, the term “homogeneous” is intended to mean a composition consisting of a single phase.

[0059] The ingredients in the composition will be described in detail below.

[0060] (Fatty Amine)

[0061] The composition comprises (a) at least one fatty amine. Two or more different types of (a) fatty amines may be used in combination. Thus, a single type of (a) fatty amine or a combination of different types of (a) fatty amines may be used.

[0062] Fatty amine is one type of cationic surfactants and has a function as a cationic surfactant.

[0063] The term “fatty” here means the inclusion of a relatively large number of carbon atoms.

[0064] The (a) fatty amine may have a substituted or non-substituted, hydrocarbon group such as alkyl group, which may have from 6 to 24 carbon atoms, preferably from 8 to 24 carbon atoms, and more preferably from 12 to 22 carbon atoms. The substituent may be a hydroxyl group or a polyoxyalkylene group. The (a) fatty amine may be in the form of a primary, secondary or tertiary fatty amine.

[0065] The (a) fatty amine may be selected from alkylamidoamines, which may be Ce-24 alkylamido Ci-6 dialkylamines, and preferably C10-22 alkylamido Ci-4 dialkylamines. The alkylamidoamines may be represented by the following formula (I):

[0066] RCONH(CH2)nNR1R2(I) wherein

[0067] RCO denotes an acyl group, which may have C6-24 carbon atoms, preferably C10-C22 carbon atoms such as stearoyl, behenoyl, palmitoyl, and cocoyl,

[0068] R1and R2denote, independently, a C1-6 alkyl group, preferably a Ci-4 alkyl group, such as a methyl group and an ethyl group, and n denotes an integer from 1 to 5, preferably 1 to 3, and more preferably 2 or 3.

[0069] The (a) fatty amine may be selected from the group consisting of stearamidopropyl dimethylamine, diethylaminoethylstearamide, dimethylstearamine, dimethylsoyamine, soyamine, tridecylamine, ethylstearylamine, ethoxylatedstearylamine, dihydroxyethylstearylamine, arachidylbehenylamine, behenamidopropyl dimethylamine, brassicamidopropyl dimethylamine, and mixtures thereof.

[0070] The salt of the fatty amine is not limited. The salts of (b) fatty amines may be chosen from halogens, actetates, phosphates, nitrates, citrates, lactates, and alkylsulfates.

[0071] For example, the salts of the (a) fatty amine may be selected from stearylamine hydrochloride, soyamine chloride, stearylamine formate, N-tallowpropane diaminedichloride, and stearamidopropyl dimethylamine citrate.

[0072] The (a) fatty amine may be selected from alkylamidoamines, preferably C6-22 alkylamido C1-6 dialkylamines, and more preferably may be stearamidopropyl dimethylamine.

[0073] The amount of the (a) fatty amine(s) in the composition may be 1% by weight or more, preferably 2% by weight or more, and more preferably 3% by weight or more, relative to the total weight of the composition.

[0074] The amount of the (a) fatty amine(s) in the composition may be 15% by weight or less, preferably 10% by weight or less, and more preferably 5% by weight or less, relative to the total weight of the composition.

[0075] The amount of the (a) fatty amine(s) in the composition may range from 1% to 15% by weight, preferably from 2% to 10% by weight, and more preferably from 3% to 5% by weight, relative to the total weight of the composition.

[0076] In the context of the present specification, any combinations of the upper limit values and the lower limit values above can be available to represent the preferred range of the amount.

[0077] (Amino-Acid Type Amphoteric Surfactant)

[0078] The composition comprises (b) at least one amino-acid type amphoteric surfactant. A single type of (b) amino-acid type amphoteric surfactant may be used, but two or more different types of (b) amino-acid type amphoteric surfactants may be used in combination.

[0079] For the present invention, the term "amino-acid type amphoteric surfactant" means amphoteric surfactants including at least one amino-acid moiety having a secondary or tertiary amine group, and a carboxylate salt group. These secondary or tertiary amine group give and receive hydrogen ion in response to pH, leading the amine group to be positively charged under isoelectric to acidic pH. Amino-acid type amphoteric surfactant also has a negatively charged anionic moiety of a carboxyl group (-COO ) under an isoelectric to basic pH. The (a) amino-acid type amphoteric surfactant can be different from so-called betaine- type amphoteric surfactants, which have a positively charged cationic moiety of a quaternary ammonium salt in an arbitrary pH.

[0080] Specifically, the (b) amino-acid type amphoteric surfactants have the following structures: R’RW-CCX'X^-COOH in an acidic condition,

[0081] R1R2HN+-(C X’X2)n-COO- in an isoelectric condition, and R!R2N-(C X'X2)n-COO_in a basic condition, wherein R1and R2represent organic groups, for example, hydrocarbon groups, and X1and X2represent H or other known functional groups, respectively.

[0082] On the other hand, betaine-type surfactants have the have the following structures: R’R2R3N+-CH2COOH in an acidic condition, and R1R2R3N+-CH2COO‘ in an isoelectric to basic conditions, wherein R1, R2and R3represent organic groups, for example, hydrocarbon groups.

[0083] Thus, the (b) amino-acid type amphoteric surfactant comprises at least one secondary or tertiary amine group while does not comprise a positively charged quaternary ammonium salt. On the other hand, betaine-type surfactants comprise a positively charged quaternary ammonium salt while does not comprise at least one secondary or tertiary amine group.

[0084] The (b) amino-acid type amphoteric surfactant of the present invention can be selected from alkyl amphoacetates, alkyl amphopropionates, alkyl amphodiacetates, alkyl amphodipropionates, and salts thereof.

[0085] Non-limiting examples of the (b) amino-acid type amphoteric surfactants, mention can be made of those represented by formula (la):

[0086] Ra'— CON(Z)CH2— (CH2)m’— N(B)(B') (la) wherein:

[0087] B represents — CH2CH2OX', with X' representing — CH2— COOH, CH2— COOZ’, — CH2CH2 — COOH, — CH2CH2 — , COOZ’, or a hydrogen atom;

[0088] B' represents — CH2)z — Y', with z=l or 2, and Y' representing — COOH, — COOZ’, — CH2 — CHOH— SO3H, or — CH2—CHOH— SO3Z’ ; m' is equal to 0, 1 or 2;

[0089] Z represents a hydrogen atom or a hydroxyethyl or carboxymethyl group;

[0090] Z' represents an ion resulting from an alkali or alkaline-earth metal, such as sodium, potassium or magnesium; an ammonium ion; or an ion resulting from an organic amine and in particular from an amino alcohol, such as monoethanolamine, diethanolamine and triethanolamine, monoisopropanol- amine, diisopropanolamine or triisopropanolamine, 2- amino-2-methyl-l -propanol, 2-amino-2-methyl-l ,3 -propanediol and tris(hydroxy- methyl)aminomethane; and Ra' represents a (Cio-C3o)alkyl or alkenyl group of an acid Ra'COOH preferably present in hydrolyzed linseed oil or coconut oil, an alkyl group, in particular a C17 alkyl group, and its iso form, or an unsaturated C17 group.

[0091] The (b) amino-acid type amphoteric surfactant can be particularly represented by Formula (lb) or (Ic):

[0092] (Ic) wherein R is an alkyl group having 8-18 carbon atoms.

[0093] Although sodium is shown as the cation in the above formulae, the cation may be any alkali metal ion, such as sodium or potassium, an ammonium ion, or an alkanolammonium ion such as monoethanolammonium or triethanolammonium ions.

[0094] Exemplary compounds of the (b) amino-acid type amphoteric surfactant may include (Cs- C2o)alkylamphoacetates, (Cs-C2o)alkylamphopropionates, (C8-C2o)alkylamphodiacetates, (Cs- C2o)alkylamphodipropionates, and combinations thereof, and preferably selected from sodium cocoamphoacetate, sodium cocoamphopropionate, disodium cocoamphodiacetate, disodium cocoamphodipropionate, sodium lauroamphoacetate, disodium lauroamphodiacetate, sodium caprylamphoacetate, disodium caprylamphodiacetate, sodium caprylamphoacetate, disodium caprylamphodiacetate, sodium lauroamphopropionate, disodium lauroamphodipropionate, sodium caprylamphopropionate, disodium caprylamphopropionate, sodium caprylomphopropionate, disodium caprylomphodipropionate, lauroamphopropionic acid, lauroamphodipropionic acid, cocoamphopropionic acid, cocoamphodipropionic acid, sodium olivamphoacetate, sodium sweetalmondamphoacetate, sodium ricebranamphoacetate, sodium sunflowerseedamphoacetate, and combinations thereof.

[0095] The amount of the (b) amino-acid type amphoteric surfactant(s) in the composition may be 0.1% by weight or more, preferably 0.2% by weight or more, and more preferably 0.3% by weight or more, relative to the total weight of the composition.

[0096] The amount of the (b) amino-acid type amphoteric surfactant(s) in the composition according to the present invention may be 10% by weight or less, preferably 5% by weight or less, and more preferably 2.5% by weight or less, relative to the total weight of the composition.

[0097] The amount of the (b) amino-acid type amphoteric surfactant(s) in the composition according to the present invention may range from 0.1% to 10% by weight, preferably from 0.2% to 5% by weight, and more preferably from 0.3% to 2.5% by weight, relative to the total weight of the composition.

[0098] (Phosphoric-acid Cross-linked Polysaccharide)

[0099] The composition according to the present invention comprises (c) at least one phosphoric-acid cross-linked polysaccharide. Two or more types of (c) phosphoric-acid cross-linked polysaccharides may be used in combination. Thus, a single type of (c) phosphoric-acid cross-linked polysaccharide or a combination of different types of (c) phosphoric-acid crosslinked polysaccharides may be used.

[0100] For the present invention, the term "phosphoric-acid cross-linked polysaccharide" here means polysaccharides cross-linked with at least one cross-linking functional agents having a phosphate group. Thus, at least one of the phosphoric-acid in the polysaccharide is not ionized for cross-linking.

[0101] The (c) phosphoric-acid cross-linked polysaccharide may be cross-linked within a single molecule of the polysaccharide or between two or more molecules of the polysaccharides. In other words, the (c) phosphoric-acid cross-linked polysaccharide may be cross-linked intramolecularly or intermolecularly.

[0102] The (c) phosphoric-acid cross-linked polysaccharides are generally in the form of a white powder, whose elemental particle size may range from 1 to 100 pm.

[0103] The polysaccharide may be selected from: a) tree or shrub exudates, including:

[0104] - gum arabic (branched polymer of galactose, arabinose, rhamnose and glucuronic acid);

[0105] - ghatti gum (polymer derived from arabinose, galactose, mannose, xylose and glucuronic acid);

[0106] - karaya gum (polymer derived from galacturonic acid, galactose, rhamnose and glucuronic acid);

[0107] - gum tragacanth (or tragacanth) (polymer of galacturonic acid, galactose, fucose, xylose and arabinose); b) gums resulting from algae, including:

[0108] - agar (polymer derived from galactose and anhydrogalactose);

[0109] - alginates (polymers of mannuronic acid and of glucuronic acid);

[0110] - carrageenans and furcellerans (polymers of galactose sulfate and of anhydrogalactose sulfate); c) gums resulting from seeds or tubers, including:

[0111] - guar gum (polymer of mannose and galactose);

[0112] - locust bean gum (polymer of mannose and galactose);

[0113] - fenugreek gum (polymer of mannose and galactose);

[0114] - tamarind gum (polymer of galactose, xylose and glucose);

[0115] - konjac gum (polymer of glucose and mannose); d) microbial gums, including:

[0116] - xanthan gum (polymer of glucose, mannose acetate, mannose / pyruvic acid and glucuronic acid);

[0117] - gellan gum (polymer of partially acylated glucose, rhamnose and glucuronic acid);

[0118] - scleroglucan gum (glucose polymer); e) plant extracts, including:

[0119] - cellulose (glucose polymer); - starch (glucose polymer) and

[0120] - inulin.

[0121] In one preferred embodiment of the present invention, the polysaccharide is selected starches. Thus, the (c) phosphoric-acid cross-linked polysaccharide may be preferably selected from phosphoric-acid cross-linked starches.

[0122] The botanical origin of the starch molecules that may be used in the present invention may be cereals or tubers. Thus, the starches are chosen, for example, from corn starch, rice starch, cassava starch, barley starch, potato starch, wheat starch, sorghum starch and pea starch.

[0123] The polysaccharides can be physically or chemically modified. As physical treatment, mention may in particular be made of the temperature.

[0124] Chemical treatments that may be mentioned include esterification, etherification, amidation and oxidation reactions. These treatments can lead to polymers that may especially be nonionic, anionic or amphoteric.

[0125] The nonionic polysaccharides that may be used according to the invention may be modified with C1-C6 (poly)hydroxyalkyl groups. Among the Ci-Ce (poly)hydroxyalkyl groups, mention may be made, for example, of hydroxymethyl, hydroxy ethyl, hydroxypropyl and hydroxybutyl groups.

[0126] More particularly, the phosphoric-acid cross-linked starch is chosen from mono-starch phosphates, in which the starch is cross-linked intermolecular such as hydroxypropyl starch phosphate, distarch phosphates, tristarch phosphates, and mixtures thereof.

[0127] The amount of the (c) phosphoric-acid cross-linked polysaccharide(s) in the composition may be 0.25% by weight or more, preferably 0.5% by weight or more, and more preferably 0.75% by weight or more, relative to the total weight of the composition.

[0128] The amount of the (c) phosphoric-acid cross-linked polysaccharide(s) in the composition may be 10% by weight or less, preferably 5% by weight or less, and more preferably 2.5% by weight or less, relative to the total weight of the composition.

[0129] The amount of the (c) phosphoric-acid cross-linked polysaccharide(s) in the composition may range from 0.25% to 10% by weight, preferably from 0.5% to 5% by weight, and more preferably from 0.75% to 2.5% by weight, relative to the total weight of the composition.

[0130] (Optional Ingredients)

[0131] The composition may comprise the following optional ingredients. Optional ingredients may or may not be included in the composition according to the present invention.

[0132] - Water

[0133] The composition typically comprises water.

[0134] The amount of water in the composition may be 50% by weight or more, preferably 65% by weight or more, and more preferably 75% by weight or more, relative to the total weight of the composition.

[0135] The amount of water in the composition may be 97.5% by weight or less, preferably 95% by weight or less, and more preferably 92.5% by weight or less, relative to the total weight of the composition.

[0136] The amount of water in the composition may range from 50% to 97.5% by weight, preferably from 65% to 95% by weight, and more preferably from 75% to 92.5% by weight, relative to the total weight of the composition.

[0137] - Oil

[0138] The composition may comprise at least one oil. Two or more oils may be used in combination. Thus, a single type of an oil or a combination of different types of oils may be used in combination.

[0139] Here, “oil” means a fatty compound or substance which is in the form of a liquid, a paste (non-solid), or solid, preferably a liquid or a paste, at room temperature (25°C) under atmospheric pressure (105Pa). As the oils, those generally used in cosmetics can be used alone or in combination thereof. These oils may be volatile or non-volatile.

[0140] Among the oils which may be used in the present invention, mention may be made of: volatile or non-volatile oils; these oils may be hydrocarbon-based oils, especially of animal or plant origin, synthetic oils, silicone oils, fluoro oils, or mixtures thereof.

[0141] For the purposes of the present invention, “hydrocarbon-based oil” or “hydrocarbon oil” is intended to mean an oil mainly containing hydrogen and carbon atoms and optionally oxygen, nitrogen, sulfur and / or phosphorus atoms. The hydrocarbon-based oil does not comprise any silicon atoms.

[0142] For the purposes of the present invention, “silicone oil” is intended to mean an oil comprising at least one silicon atom, and especially at least one Si-0 group.

[0143] The oil is different from the (a) fatty amine.

[0144] The hydrocarbon oils may be chosen from: linear or branched, optionally cyclic, Ce-Ci6 lower alkanes. Examples that may be mentioned include hexane, undecane, dodecane, tridecane, and isoparaffins, for instance isohexadecane, isododecane, and isodecane; linear or branched hydrocarbons containing more than 16 carbon atoms, such as liquid paraffins, liquid petroleum jelly, polydecenes and hydrogenated polyisobutenes such as Parleam®, and squalane; and mixtures of alkanes, for example, C9-12 Alkane, Cl 0-13 Alkane, Cl 3- 14 Alkane, C13-15 Alkane, C14-17 Alkane, C14-19 Alkane, C15-19 Alkane, C15-23 Alkane, C18- 21Alkane, C8-9 Alkane / Cycloalkane, C9-10 Alkane / Cycloalkane, C9-11 Alkane / Cycloalkane, C9-16 Alkane / Cycloalkane, Cl 0-12 Alkane / Cycloalkane, Cl 1-14 Alkane / Cycloalkane, Cl 1- 15 Alkane / Cycloalkane, Cl 2- 13 Alkane / Cycloalkane.

[0145] As preferable examples of hydrocarbon oils, mention may be made of, for example, linear or branched hydrocarbons such as isohexadecane, isododecane, squalane, mineral oil (e.g., liquid paraffin), paraffin, vaseline or petrolatum, naphthalenes, and the like; hydrogenated polyisobutene, isoeicosan, and decene / butene copolymer; and mixtures thereof.

[0146] As examples of plant oils, mention may be made of, for example, linseed oil, camellia oil, macadamia nut oil, com oil, mink oil, olive oil, avocado oil, sasanqua oil, castor oil, safflower oil, jojoba oil, sunflower oil, almond oil, rapeseed oil, sesame oil, soybean oil, peanut oil, and mixtures thereof.

[0147] The plant oils may be plant-extracted butters. Among the plant-extracted butters, the following may be cited: shea butter, Nilotica shea butter (Butyrospermum parkii), galam butter (Butyrospermum parkii), Borneo butter or fat or tengkawang tallow (Shorea stenoptera), shorea butter, illipe butter, madhuca butter or (Bassia) Madhuca longifolia butter, mowrah butter (Madhuca latifolia), katiau butter (Madhuca mottleyana), phulwara butter (M. butyracea), mango butter (Mangifera indica), murumuru butter (Astrocaryum murumuru), kokum butter (Garcinia indica), ucuuba butter (Virola sebifera), tucuma butter, painya (kpangnan) butter (Pentadesma butyracea), coffee butter (Coffea arabica), apricot butter (Prunus armeniaca), macadamia butter (Macadamia temifolia), grapeseed butter (Vitis vinifera), avocado butter (Persea gratissima), olive butter (Olea europaea), sweet almond butter (Prunus amygdalus dulcis), cocoa butter (Theobroma cacao), and sunflower butter.

[0148] As examples of animal oils, mention may be made of, for example, squalene and squalane.

[0149] As examples of synthetic oils, mention may be made of alkane oils such as isododecane and isohexadecane, ester oils, ether oils, fatty alcohols, and artificial triglycerides.

[0150] The ester oils are preferably liquid esters of saturated or unsaturated, linear or branched Ci- C26 aliphatic monoacids or polyacids and of saturated or unsaturated, linear or branched Ci- C26 aliphatic monoalcohols or polyalcohols, the total number of carbon atoms of the esters being greater than or equal to 10.

[0151] Preferably, for the esters of monoalcohols, at least one from among the alcohol and the acid from which the esters of the present invention are derived is branched.

[0152] Among the monoesters of monoacids and of monoalcohols, mention may be made of ethyl palmitate, ethyl hexyl palmitate, isopropyl palmitate, dicaprylyl carbonate, alkyl myristates such as isopropyl myristate or ethyl myristate, cetyl esters, lauryl laurate, in particular, cetostearyl octanoate and isocetyl stearate, 2-ethylhexyl isononanoate, isononyl isononanoate, isodecyl neopentanoate and isostearyl neopentanoate. For the purpose of the present invention, cetyl esters mean a mixture of esters of saturated fatty acids and fatty alcohols with carbon chain lengths between 14 and 18. Specifically, cetyl esters may include cetyl palmitate, cetyl stearate, myristyl myristate, myristyl palmitate, myristyl stearate, cetyl myristate, and stearyl stearate.

[0153] Esters of C4-C22 dicarboxylic or tricarboxylic acids and of C1-C22 alcohols, and esters of monocarboxylic, dicarboxylic or tricarboxylic acids and of non-sugar C4-C26 dihydroxy, trihydroxy, tetrahydroxy or pentahydroxy alcohols may also be used.

[0154] Mention may especially be made of: diethyl sebacate; isopropyl lauroyl sarcosinate; diisopropyl sebacate; bis(2-ethylhexyl) sebacate; diisopropyl adipate; di-n-propyl adipate; dioctyl adipate; bis(2-ethylhexyl) adipate; diisostearyl adipate; bis(2-ethylhexyl) maleate; triisopropyl citrate; triisocetyl citrate; triisostearyl citrate; glyceryl trilactate; glyceryl trioctanoate; trioctyldodecyl citrate; trioleyl citrate; neopentyl glycol diheptanoate; diethylene glycol diisononanoate.

[0155] As ester oils, one can use sugar esters and diesters of C6-C30 and preferably C12-C22 fatty acids. Note that the term “sugar” means oxygen-bearing hydrocarbon-based compounds containing several alcohol functions, with or without aldehyde or ketone functions, and which comprise at least 4 carbon atoms. These sugars may be monosaccharides, oligosaccharides or polysaccharides.

[0156] Examples of suitable sugars that may be mentioned include sucrose (or saccharose), glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose and lactose, and derivatives thereof, especially alkyl derivatives, such as methyl derivatives, for instance methylglucose.

[0157] The sugar esters of fatty acids may be chosen especially from the group comprising the esters or mixtures of esters of sugars described previously and of linear or branched, saturated or unsaturated C6-C30 and preferably C12-C22 fatty acids. If they are unsaturated, these compounds may have one to three conjugated or non-conjugated carbon-carbon double bonds.

[0158] The esters according to this variant may also be selected from monoesters, diesters, triesters, tetraesters and polyesters, and mixtures thereof.

[0159] These esters may be, for example, oleates, laurates, palmitates, myristates, behenates, cocoates, stearates, linoleates, linolenates, caprates and arachidonates, or mixtures thereof such as, especially, oleopalmitate, oleostearate and palmitostearate mixed esters, as well as pentaerythrityl tetraethyl hexanoate.

[0160] The fatty alcohols can be saturated or unsaturated, linear or branched, and contain 6 to 30 carbon atoms and more particularly from 8 to 30 carbon atoms.

[0161] As the fatty acid, mention may be made of cetyl alcohol, stearyl alcohol and a mixture thereof (cetearyl alcohol), octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, oleyl alcohol or linoleyl alcohol.

[0162] As the ether oil, dialkyl ethers such as those represented by the following formula: R’-O-R2wherein each of R1and R2independently denotes a linear, branched or cyclic C4-C24 alkyl group, preferably Ce-Cis alkyl group, and more preferably C8-C12 alkyl group. It is preferable that R1and R2are the same.

[0163] As the linear alkyl group, mention may be made of a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group, an undecyl group, a dodecyl group, tridecyl group, a tetradecyl group, a pentadecyl group, a hexadecyl group, a heptadecyl group, an octadecyl group, a nonadecyl group, an eicosyl group, a behenyl group, a docosyl group, a tricosyl group, and a tetracosyl group.

[0164] As the branched alkyl group, mention may be made of a 1 -methylpropyl group, 2- methylpropyl group, a t-butyl group, a 1,1 -dimethylpropyl group, a 3 -methylhexyl group, a 5- methylhexyl group, an 1 -ethylhexyl group, an 2-ethylhexylgroup, a 1 -butylpentyl group, a 5- methyloctyl group, an 1 -ethylhexyl group, an 2-ethylhexyl group, a 1 -butylpentyl group, a 5- methyloctyl group, a 2-butyloctyl group, an isotridecyl group, a 2-pentylnonyl group, a 2- hexyldecyl group, an isostearyl group, a 2-heptylundecyl group, an 2-octyldodecyl group, a 1,3 -dimethylbutyl group, a l-(l-methylethyl)-2-methylpropyl group, a 1, 1,3,3- tetramethylbutyl group, a 3,5,5-trimethylhexyl group, a l-(2-methylpropyl)-3-methylbutyl group, a 3,7-dimethyloctyyl group, and a 2-(l,3,3-trimethylbutyl)-5,7,7-trimethyloctyl group.

[0165] As the cyclic alkyl group, mention may be made of a cyclohexyl group, a 3-methylcyclohexyl group, and a 3,3,5-trimethylcyclohexyl group.

[0166] As examples of artificial triglycerides, mention may be made of, for example, capryl caprylyl glycerides, glyceryl trimyristate, glyceryl tripalmitate, glyceryl trilinolenate, glyceryl trilaurate, glyceryl tricaprate, glyceryl tricaprylate, glyceryl tri(caprate / caprylate), and glyceryl tri(caprate / caprylate / linolenate).

[0167] As examples of silicone oils, mention may be made of, for example, linear organopolysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, and the like; cyclic organopolysiloxanes such as cyclohexasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and the like; and mixtures thereof.

[0168] The oil may be preferably selected from ester oils and fatty alcohols.

[0169] The amount of the oil(s) in the composition may be 1% by weight or more, preferably 3% by weight or more, and more preferably 5% by weight or more, relative to the total weight of the composition.

[0170] The total amount of the oil(s) in the composition may be 25% by weight or less, preferably 20% by weight or less, and more preferably 15% by weight or less, relative to the total weight of the composition.

[0171] The total amount of the oil(s) in the composition may range from 1% to 25% by weight, preferably from 3% to 20% by weight, and more preferably from 5% to 15% by weight, relative to the total weight of the composition.

[0172] - Adjuvants

[0173] The composition may or may not include any adjuvants typically employed in cosmetics, such as solvents, in particular cosmetically acceptable organic solvents; inorganic or organic powders; anionic, non-ionic, cationic, amphoteric or zwitterionic polymers, or mixtures thereof; anionic surfactants, non-ionic surfactants, quaternary cationic surfactants or mixtures thereof; natural extracts derived from animals or vegetables; lipophilic thickening agents; dyes; cosmetic active agents; fragrances; antioxidants; pH adjusting agents, reducing agents, alkaline agents, preservatives; chelating or sequestering agents; and opacifying agents, within a range which does not impair the effects of the present invention.

[0174] The total amount of adjuvants in the composition may range from 0.01% to 30% by weight, preferably from 0.1% to 20% by weight, and more preferably from 0.5% to 10% by weight, relative to the total weight of the composition. In one specific embodiment of the present invention, the composition does not include silicones or includes a tiny amount of silicones. For example, the composition comprises silicones in an amount of less than 3% by weight, preferably less than 1% by weight, more preferably less than 0.5% by weight, and even more preferably less than 0.1% by weight, relative to the total weight of the composition. In another embodiment, the composition is free of any silicones.

[0175] As explained above, the process according to the present invention is not for cleaning and / or shampooing keratin fibers. Thus, the composition used in the process is not a composition for cleaning or not a shampoo. In one embodiment of the present invention, the composition does not include a large amount of anionic surfactants. For example, the composition comprises anionic surfactants in an amount of less than 20% by weight, preferably less than 10% by weight, more preferably less than 5% by weight, and even more preferably less than 4% by weight, relative to the total weight of the composition. In another embodiment, the composition is free of any anionic surfactants.

[0176] In another embodiment of the present invention, the composition does not include a large amount of amphoteric surfactants other than the (b) amino-acid type amphoteric surfactants. For example, the composition comprises amphoteric surfactants other than the (b) amino-acid type amphoteric surfactants in an amount of less than 10% by weight, preferably less than 5% by weight, more preferably less than 3% by weight, and even more preferably less than 2% by weight, relative to the total weight of the composition. In another embodiment, the composition is free of any amphoteric surfactants other than the (b) amino-acid type amphoteric surfactants.

[0177] The pH value of the composition is not particularly limited, but in general ranges from 3.0 to 9.0, preferably from 3.5 to 6.0.

[0178] The composition can be prepared by mixing the above essential and optional ingredients in accordance with any of the processes which are well known to those skilled in the art.

[0179] According to a preferred embodiment, the process for conditioning keratin fibers according to the invention, comprises the step of applying the composition on the hair, wherein the composition comprises, relative to the total weight of the composition:

[0180] (a) from 1% to 15% by weight of the at least one fatty amine;

[0181] (b) from 0.1% to 10% by weight of the at least one amino-acid type amphoteric surfactant; and

[0182] (c) from 0.25% to 10% by weight of the at least one phosphoric-acid cross-linked polysaccharide.

[0183] According to a preferred embodiment, the process for conditioning keratin fibers according to the invention, comprises the step of applying the composition on the keratin fibers, wherein the composition comprises, relative to the total weight of the composition:

[0184] (a) from 2% to 10% by weight of the at least one fatty amine selected from alkylamidoamines may be represented by the following formula (I): RCONH(CH2)nNR1R2(I) wherein

[0185] RCO denotes an acyl group, which may have C6-22 carbon atoms, R1and R2denote, independently, a C1-6 alkyl group, and n denotes an integer from 1 to 5;

[0186] (b) from 0.2% to 5% by weight of the at least one amino-acid type amphoteric surfactant selected from (C8-C2o)alkylamphoacetates, (C8-C2o)alkylamphopropionates, (Cs- C2o)alkylamphodiacetates, (C8-C2o)alkylamphodipropionates, and combinations thereof; and

[0187] (c) from 0.5% to 5% by weight of the at least one phosphoric-acid cross-linked polysaccharide selected from phosphoric-acid cross-linked starches.

[0188] According to a preferred embodiment, the process for conditioning hair according to the invention, comprises the step of applying the composition on the keratin fibers, wherein the composition comprises, relative to the total weight of the composition:

[0189] (a) from 3% to 5% by weight of the at least one fatty amine selected from the group consisting of stearamidopropyl dimethylamine, diethylaminoethylstearamide, dimethylstearamine, dimethylsoyamine, soyamine, tridecylamine, ethylstearylamine, ethoxylatedstearylamine, dihydroxyethylstearylamine, arachidylbehenylamine, behenamidopropyl dimethylamine, brassicamidopropyl dimethylamine, and combinations thereof;

[0190] (b) from 0.3% to 2.5% by weight of at least one amino-acid type amphoteric surfactant selected from sodium cocoamphoacetate, sodium cocoamphopropionate, disodium cocoamphodiacetate, disodium cocoamphodipropionate, sodium lauroamphoacetate, disodium lauroamphodiacetate, sodium caprylamphoacetate, disodium caprylamphodiacetate, sodium caprylamphoacetate, disodium caprylamphodiacetate, sodium lauroamphopropionate, disodium lauroamphodipropionate, sodium caprylamphopropionate, disodium caprylamphopropionate, sodium caprylomphopropionate, disodium caprylomphodipropionate, lauroamphopropionic acid, lauroamphodipropionic acid, cocoamphopropionic acid, cocoamphodipropionic acid, sodium olivamphoacetate, sodium sweetalmondamphoacetate, sodium ricebranamphoacetate, sodium sunflowerseedamphoacetate, and combinations thereof; and

[0191] (c) from 0.75% to 2.5% by weight of the at least one phosphoric-acid cross-linked polysaccharide selected from mono-starch phosphates, in which the starch is cross-linked intermolecular such as hydroxypropyl starch phosphate, distarch phosphates, tristarch phosphates, and mixtures thereof.

[0192] [Composition]

[0193] The composition according to the present invention is the composition used in the process according to the present invention. Thus, the composition according to the present invention is as explained in the process above, and comprises:

[0194] (a) at least one fatty amine;

[0195] (b) at least one amino-acid type amphoteric surfactant; and

[0196] (c) at least one phosphoric-acid cross-linked polysaccharide.

[0197] The ingredients (a) to (c) are as explained above. In addition, the composition according to the present invention may comprise additional optional ingredients as explained above.

[0198] The composition according to the present invention is for conditioning keratin fibers, preferably hair. Thus, the composition according to the present invention is intended to be applied to the keratin fibers. The composition according to the present invention is different from a shampoo composition which is for cleaning keratin fibers.

[0199] The composition according to the present invention may be a leave-on or rinse-off type. The leave-on type composition is not rinsed off after being used on the keratin fibers. The rinse- off type composition is rinsed off after being used on the keratin fibers. In one preferred embodiment of the present invention, the composition according to the present invention is a rinse-off type composition.

[0200] The composition according to the present invention can be used to condition keratin fibers. Preferably, the composition according to the present invention can be used as a hair-treatment or a conditioner for hair.

[0201] Because the composition according to the present invention includes the (a) fatty amine, (b) amino-acid type amphoteric surfactant, and (c) phosphoric-acid cross-linked polysaccharide, it can provide the keratin fibers with improved sensory effects, and a good stability over time, without causing an issue of precipitation.

[0202] EXAMPLES

[0203] The present invention will be described in more detail by way of examples. However, these examples should not be construed as limiting the scope of the present invention. The examples below are presented as non-limiting illustrations in the field of the present invention.

[0204] [Processes]

[0205] Each of the compositions according to Examples 1 and 2 (Ex. 1 and Ex. 2) and Comparative Examples 1 to 3 (Comp. Ex. 1 to Comp. Ex. 3) was prepared by mixing the ingredients listed in Table 1 below. The numerical values for the amounts of the ingredients are all based on “% by weight” as active raw materials. All the composition had a pH value of 4.

[0206] Precipitation was occurred in the composition according to Comparative Example 3 after the preparation. Thus, the following evaluations were not conducted on the composition according to Comparative Examples 3.

[0207] Bleached hair (Chinese, 2.7g, 27cm) was washed using a plain shampoo and then rinsed. Subsequently, 0.4 g / g of each of the compositions according to Examples 1 and 2 and Comparative Examples 1 and 2 was applied to the bleached hair.

[0208] After leaving the hair for 5 minutes, the composition was rinsed with water, and then the hair was blow-dried.

[0209] [Evaluations]

[0210] (Stability)

[0211] Each of the composition was left to stand at 50°C for two weeks. After two weeks, the stability of the composition was investigated by observing the bulk texture. The stability was scored in accordance with the following criteria. Good: the bulk was as smooth as just after prepared.

[0212] Fair: the texture was uneven.

[0213] Poor: granules were observed.

[0214] (Sensorial Evaluation)

[0215] Sensorial evaluation was carried out with respect to coating quality, i.e. coating amount and softness on the treated hair above. These aspects were assessed by 3 lab experts based on the following criteria.

[0216] Coating amount

[0217] 1 : Plenty

[0218] 2: Sufficient

[0219] 3: Not enough

[0220] Hair softness

[0221] 1 : Very soft

[0222] 2: Soft

[0223] 3: Not soft

[0224] Each of the scores was averaged and are shown in Table 1. A smaller number of overall scores indicate perceived better quality of coating.

[0225] The results are shown in Table 1.

[0226] Table 1

[0227] (1) Genadvance SPA sold by Clariant

[0228] (2) Miranol® Ultra C-32 sold by Syensqo

[0229] (3) AGENAJEL 20.306 sold by AGRANA STARKE (4) Structure® ZEA sold by Nouryon

[0230] As shown in Table 1, the process according to the present invention comprising the step of the application of the composition according to Examples 1 and 2, which comprise the combination of the ingredients (a) to (c), provided the hair with improved sensory effects with respect to the increased amount of coating and improved feel of softness. In addition, the compositions according to Examples 1 and 2 exhibited a good stability over time without causing an issue of precipitation.

[0231] On the other hand, the process according to Comparative Examples 1 and 2, in which the composition did not include the (c) phosphoric-acid cross-linked polysaccharide, could not provide the hair with sufficient sensory effects. In addition, the compositions according to Comparative Examples 1 and 2 were not very stable. Furthermore, the composition according to Comparative Example 3, which also did not include the (c) phosphoric-acid cross-linked polysaccharide, yielded precipitation upon formulation, indicating the incompatibility of ingredients used.

[0232] Accordingly, it can be concluded that the process according to present invention can provide dried hair with improved conditioning benefits and thus is very preferred for conditioning hair.

Claims

CLAIMS1. A process for conditioning keratin fibers, comprising a step of an application of a composition on the keratin fibers, wherein the composition comprises:(a) at least one fatty amine;(b) at least one amino-acid type amphoteric surfactant; and(c) at least one phosphoric-acid cross-linked polysaccharide.

2. The process according to Claim 1, wherein the (a) fatty amine is selected from selected from alkylamidoamines may be represented by the following formula (I):RCONH(CH2)nNR1R2(I) wherein RCO denotes an acyl group, which may have C6-22 carbon atoms, R1and R2denote, independently, a C1-6 alkyl group, and n denotes an integer from 1 to 5.

3. The process according to Claim 1 or 2, wherein the (a) fatty amine is selected from stearamidopropyl dimethylamine, diethylaminoethylstearamide, dimethylstearamine, dimethylsoyamine, soyamine, tridecylamine, ethylstearylamine, ethoxylatedstearylamine, dihydroxyethylstearylamine, arachidylbehenylamine, behenamidopropyl dimethylamine, brassicamidopropyl dimethylamine, and combinations thereof.

4. The process according to any one of Claims 1 to 3, wherein the (b) amino-acid type amphoteric surfactant is selected from (C8-C2o)alkylamphoacetates, (Cs- C2o)alkylamphopropionates, (C8-C2o)alkylamphodiacetates, (Cs- C2o)alkylamphodipropionates, and combinations thereof.

5. The process according to any one of Claims 1 to 4, wherein the (b) amino-acid type amphoteric surfactant is selected from sodium cocoamphoacetate, sodium cocoamphopropionate, disodium cocoamphodiacetate, disodium cocoamphodipropionate, sodium lauroamphoacetate, disodium lauroamphodiacetate, sodium caprylamphoacetate, disodium caprylamphodiacetate, sodium caprylamphoacetate, disodium caprylamphodiacetate, sodium lauroamphopropionate, disodium lauroamphodipropionate, sodium caprylamphopropionate, disodium caprylamphopropionate, sodium caprylomphopropionate, disodium caprylomphodipropionate, lauroamphopropionic acid, lauroamphodipropionic acid, cocoamphopropionic acid, cocoamphodipropionic acid, sodium olivamphoacetate, sodium sweetalmondamphoacetate, sodium ricebranamphoacetate, sodium sunflowerseedamphoacetate, and combinations thereof.

6. The process according to any one of Claims 1 to 5, wherein the (c) phosphoric-acid cross-linked polysaccharide is selected from phosphoric-acid cross-linked starches.

7. The process according to any one of Claims 1 to 6, wherein the (c) phosphoric-acid cross-linked polysaccharide is selected from mono-starch phosphates, in which the starch is cross-linked intermolecular, such as hydroxypropyl starch phosphate, distarch phosphates, tristarch phosphates, and mixtures thereof.

8. The process according to any one of Claims 1 to 7, wherein the amount of the (a) fatty amine(s) in the composition ranges from 1% to 15% by weight, preferably from 2% to 10% by weight, and more preferably from 3% to 5% by weight, relative to the total weight of the composition.

9. The process according to any one of Claims 1 to 8, wherein the amount of the (b) amino-acid type amphoteric surfactant(s) in the composition ranges from 0.1% to 10% by weight, preferably from 0.2% to 5% by weight, and more preferably from 0.3% to 2.5% by weight, relative to the total weight of the composition.

10. The process according to any one of Claims 1 to 9, wherein the amount of the (c) phosphoric-acid cross-linked polysaccharide(s) in the composition range from 0.25% to 10% by weight, preferably from 0.5% to 5% by weight, and more preferably from 0.75% to 2.5% by weight, relative to the total weight of the composition.

11. The process according to any one of Claims 1 to 10, wherein the process is not a process for cleansing or shampooing keratin fibers.

12. A composition for conditioning keratin fibers, comprising:(a) at least one fatty amine;(b) at least one amino-acid type amphoteric surfactant; and(c) at least one phosphoric-acid cross-linked polysaccharide.

13. The composition according to Claim 12, which is not a shampoo composition or not a composition for cleaning keratin fibers.

14. The composition according to Claim 12 or 13, which comprises anionic surfactants in an amount of less than 20% by weight, preferably less than 10% by weight, more preferably less than 5% by weight, and even more preferably less than 4% by weight, relative to the total weight of the composition, or the composition is free of any anionic surfactants.

15. The composition according to any of Claims 12 to 14, which comprises amphoteric surfactants other than the (b) amino-acid type amphoteric surfactants in an amount of less than 10% by weight, preferably less than 5% by weight, more preferably less than 3% by weight, and even more preferably less than 2% by weight, relative to the total weight of the composition, or the composition is free of any amphoteric surfactants other than the (b) amino-acid type amphoteric surfactants.

Images