FR3140269A1 - Cosmetic composition comprising a particular silicone emulsion, a particular cationic polymer, a particular anionic surfactant and an amphoteric surfactant - Google Patents

Abstract

Cosmetic composition comprising a particular silicone emulsion, a particular cationic polymer, a particular anionic surfactant and an amphoteric surfactant The present invention relates to a composition useful for cleaning and/or conditioning keratin fibers, and in particular human keratin fibers such as hair, which comprises a particular silicone emulsion, a particular cationic polymer, a particular anionic surfactant and a amphoteric surfactant. The invention also relates to a cosmetic process for cleaning and/or conditioning keratin fibers using such a composition. Finally, the invention relates to the use of such a composition for washing and/or conditioning keratin fibers, preferably hair. Figure for the abstract: none

Description

Cosmetic composition comprising a particular silicone emulsion, a particular cationic polymer, a particular anionic surfactant and an amphoteric surfactant

The present invention relates to a composition useful for cleaning and/or conditioning keratin fibers, and in particular human keratin fibers such as hair, which comprises a particular silicone emulsion, a particular cationic polymer, a particular anionic surfactant and an amphoteric surfactant.

The invention also relates to a cosmetic process for cleaning and/or conditioning keratin fibers using such a composition.

Finally, the invention relates to the use of such a composition for washing and/or conditioning keratin fibers, preferably hair.

It is common to use detergent cosmetic compositions such as shampoos and shower gels, mainly based on surfactants, to wash keratin materials, in particular hair and skin. These compositions are applied to the keratin materials, which are preferably wet, and the foam generated by massage or rubbing with the hands or a washcloth allows, after rinsing with water, to remove the various types of dirt initially present on the hair or skin.

These compositions generally contain high levels of “detergent” surfactants, which, in order to be able to formulate cosmetic compositions with good detergent power, must in particular give them good foaming power.

The surfactants useful for this purpose are generally of the anionic, non-ionic and/or amphoteric type, and in particular of the anionic type.

These compositions generally have good washing power, but the intrinsic cosmetic properties associated with them nevertheless remain quite poor, in particular because the relatively aggressive nature of such a cleaning treatment can, in the long term, lead to more or less pronounced damage caused to the hair fiber, this damage being associated in particular with the progressive elimination of lipids or proteins contained in or on the surface of this fiber.

Thus, in order to improve the cosmetic properties of the above detergent compositions, and more particularly those that must be applied to sensitized hair (i.e. hair that has been damaged or weakened, in particular under the chemical action of atmospheric agents and/or hair treatments such as permanent waving, dyeing or bleaching), it is now common to introduce additional cosmetic agents called conditioners into these compositions. These conditioners are mainly intended to repair or limit the harmful or undesirable effects induced by the various treatments or aggressions to which the hair fibers are subjected more or less repeatedly. Of course, they can also improve the cosmetic behavior of natural hair.

The most commonly used conditioners in shampoos today include cationic polymers, silicones and/or silicone derivatives, which give washed, dry or wet hair an ease of detangling, softness and smoothness that are significantly better than those obtainable with corresponding cleansing compositions that lack them.

It is particularly known for using a mixture of silicone and cationic polymer. However, the compositions containing them still have many drawbacks, such as insufficient deposition of silicones on the hair, which significantly affects their cosmetic performance.

There is therefore a real need to provide compositions, such as compositions for cleaning and/or conditioning keratin fibers, and in particular human keratin fibers, which make it possible to overcome the disadvantages described above, namely which effectively remove dirt and excess sebum and enhance the cosmetic properties of said fibers, such as softness, smoothness, manageability and detangling. These cosmetic properties can also be long-lasting.

In particular, the composition should provide satisfactory deposition of conditioning substances, such as silicones and/or cationic polymers, onto the keratin fibres, thereby leading to an improved smooth coating of the fibres, and should improve detangling of the hair.

These objectives are achieved with the present invention, a subject of which is a cosmetic composition comprising:

(a) an oil-in-water emulsion having a D50 particle size of less than 350 nm and comprising:

- a silicone mixture comprising (i) a trialkylsilyl terminated dialkylpolysiloxane having a viscosity of 40,000 to less than 100,000 mPa.s at 25°C and (ii) an amino silicone having a viscosity of 1,000 to 15,000 mPa.s at 25°C and an amine index of 2 to 10 mg KOH per gram of amino silicone,

- an emulsifier mixture comprising one or more non-ionic emulsifiers, wherein the emulsifier mixture has an HLB value of from 10 to 16, and

- water;

(b) one or more cationic guar polymers,

(c) one or more anionic α-olefin sulfonate surfactants, and

(d) one or more amphoteric or zwitterionic surfactants.

This composition, when applied to keratin fibers, including human keratin fibers such as hair and more particularly sensitized hair, leads to an improvement in the condition and quality of the hair, in terms of feel (e.g. smooth feel, soft feel, conditioned feel) and ease of styling of the hair: the hair has no or less frizz, has good styling/shaping ability, flies less and has desirable volume. Combing and detangling of the hair is easier.

In addition, the composition according to the invention makes it possible to significantly improve the deposition of silicone on the keratin fibers. This makes it possible to obtain a superior smooth coating on the fibers, from the roots to the ends, with less dry ends.

Even more surprisingly, it was discovered that the deposition of silicones and/or cationic polymers on the hair is significantly higher with the composition according to the invention in comparison with a similar composition which does not comprise the particular association disclosed herein, in particular the particular silicone emulsion.

The composition according to the invention has good detergent power.

When the composition contains foaming surfactants, it generates a rich and creamy foam when massaged onto a wet substrate, which is easy to spread on the fibers.

It was also noted that hair treated with the composition according to the invention is particularly clean and light (no build-up).

The observed properties of the composition according to the invention are particularly durable.

The present invention also relates to a treatment method, in particular for washing and/or conditioning, keratin fibers, preferably human keratin fibers such as hair, comprising the application to keratin fibers of this composition.

Another subject of the invention is the use of the composition according to the invention for washing and/or conditioning keratin fibers, preferably hair.

The invention also relates to a cosmetic process for cleaning keratinous fibers, in particular human keratinous fibers such as hair, which consists in applying to said keratinous fibers a composition as defined above.

Other subjects, features, aspects and advantages of the invention will become even more apparent from the following description and example.

As used herein, unless otherwise specified, the limits of a range of values are included within that range, particularly in the expressions "between...and..." and "from...to..".

Furthermore, the expression "at least one" used in this description is equivalent to the expression "one or more".

Preferably, the composition according to the invention is free of sulfate, in particular free of sulfate anionic surfactants (i.e. free of anionic surfactants comprising at least one sulfate function but not comprising any carboxylate or sulfonate function).

For the purposes of the present invention, the term "free" refers to a composition which does not contain (0%) said component or which contains less than 0.1% by weight of said component, relative to the total weight of the composition.

a) Silicone emulsion

The composition according to the present invention comprises an oil-in-water (or silicone-in-water) emulsion having a particle size D50 of less than 350 nm and containing:

- a silicone mixture comprising (i) a trialkylsilyl terminated dialkylpolysiloxane having a viscosity of 40,000 to less than 100,000 mPa.s at 25°C and (ii) an amino silicone having a viscosity of 1,000 to 15,000 mPa.s at 25°C and an amine index of 2 to 10 mg KOH per gram of amino silicone,

- an emulsifier mixture comprising one or more non-ionic emulsifiers, wherein the emulsifier mixture has an HLB value of from 10 to 16, and

- water.

In the oil-in-water emulsion, or silicone-in-water emulsion, one liquid phase (the dispersed phase) is dispersed in the other liquid phase (the continuous phase); in the present invention, the silicone mixture, or silicone phase, is dispersed in the continuous aqueous phase.

• (i) trialkylsilyl terminated dialkylpolysiloxanes

The silicone mixture comprises a trialkylsilyl-terminated dialkylpolysiloxane, preferably of formula (IX):

R' ₃ SiO(R' ₂ SiO) _p SiR' ₃

in which:

- R', identical or different, are a monovalent hydrocarbon radical comprising from 1 to 18 carbon atoms, preferably from 1 to 6 carbon atoms, better still from 1 to 3 carbon atoms, more preferably methyl, and

- p is an integer from 500 to 2000, preferably from 1000 to 2000.

The dialkylpolysiloxanes terminated with trialkylsilyl (or blocked at the end or in the α,ω position) according to the invention have a viscosity of 40,000 to less than 100,000 mPa.s (100,000 excluded) at 25°C, preferably a viscosity of 40,000 to 70,000 mPa.s at 25°C, more preferably a viscosity of 51,000 to 70,000 mPa.s at 25°C.

The trialkylsilyl-terminated dialkylpolysiloxanes according to the invention are preferably linear but may contain, in addition to R' ₂ SiO _2/2 units (D units) in formula (IX), R' ₂ SiO _3/2 units (T units) and/or R' ₂ SiO _4/2 units (Q units), in which R' ₂ , identical or different, are a monovalent hydrocarbon radical comprising from 1 to 18 carbon atoms.

Preferably, R', which may be identical or different, are alkyl radicals, preferably C ₁ -C _{18 alkyl radicals,} such as methyl, ethyl, n-propyl, isopropyl, 1-n-butyl, 2-n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, neopentyl and tert-pentyl radicals, hexyl radicals, such as the n-hexyl radical, heptyl radicals, such as the n-heptyl radical, octyl radicals, such as the n-octyl radical and isooctyl radicals, such as the 2,2,4-trimethylpentyl radical, nonyl radicals, such as the n-nonyl radicals, decyl radicals, such as the n-decyl radical, dodecyl radicals, such as the n-dodecyl radical, and octadecyl radicals, such as the n-octadecyl radical; alkenyl radicals, such as the vinyl and allyl radical; cycloalkyl radicals, such as the cycloopentyl, cyclohexyl, cycloheptyl, and methylcyclohexyl radicals; aryl radicals, such as the phenyl, naphthyl, anthryl, and phenanthryl radicals; alkaryl radicals, such as the o-, m-, and p-tolyl radicals, xylyl radicals, and ethylphenyl radicals; and aralkyl radicals such as the benzyl radical and the a- and b-phenylethyl radical. The methyl radical is most preferred.

Preferably, the trialkylsilyl terminated dialkylpolysiloxanes are trimethylsilyl terminated PDMS (polydimethylsiloxanes or dimethicones).

• (ii) amino silicones

The silicone mixture comprises an amino silicone preferably of formula (X):

XR ₂ Si(OSiAR) _n (OSiR ₂ ) _m OSiR ₂

in which:

- R, identical or different, are a monovalent hydrocarbon radical comprising from 1 to 18 carbon atoms, preferably from 1 to 6 carbon atoms, better still from 1 to 3 carbon atoms, more preferably methyl;

- X, identical or different, are R or a hydroxyl (OH) or C ₁ -C ₆ alkoxy group; preferably X is R, that is to say a monovalent hydrocarbon radical comprising from 1 to 18 carbon atoms, preferably from 1 to 6 carbon atoms, better still from 1 to 3 carbon atoms, more preferably methyl;

- A is an amino radical of formula -R ¹ -[NR ² -R ³ -] _x NR ² _2, or the protonated amino forms of said amino radical, in which R ¹ is a C ₁ -C ₆ alkylene radical, preferably a radical of formula -CH ₂ CH ₂ - _or -CH ₂ CH(CH ₃ )CH ₂ -, R ² , identical or different, are a hydrogen atom or a C ₁ -C ₄ alkyl radical, preferably a hydrogen atom, R ³ is a C ₁ -C ₆ alkylene radical, preferably a radical of formula -CH ₂ CH ₂ -, and x is 0 or 1;

And

- m+n is an integer from 50 to about 1000, preferably from 50 to 600.

Preferably, A is an amino radical of formula

-R ¹ -[NR ² -R ³ -] _x NR ² ₂ , or the protonated amino forms of said amino radical, wherein R ¹ is -CH ₂ CH ₂ CH ₂ - or -CH ₂ CH(CH ₃ )CH ₂ -, R ² are hydrogen atoms, R ³ is -CH ₂ CH ₂ -, and x is 1.

Preferably, R, which may be identical or different, are alkyl radicals, preferably C ₁ -C ₁₈ alkyl radicals, such as methyl, ethyl, n-propyl, isopropyl, 1-n-butyl, 2-n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, neopentyl and tert-pentyl radicals, hexyl radicals, such as the n-hexyl radical, heptyl radicals, such as the n-heptyl radical, octyl radicals such as the n-octyl radical and isooctyl radicals such as the 2,2,4-trimethylpentyl radical, nonyl radicals such as the n-nonyl radicals, decyl radicals such as the n-decyl radical, dodecyl radicals such as the n-dodecyl radical, octadecyl radicals such as the n-octadecyl radical; alkenyl radicals such as the vinyl and allyl radical; cycloalkyl radicals such as the cyclopentyl, cyclohexyl, cycloheptyl and methylcyclohexyl radicals; aryl radicals such as the phenyl, naphthyl, anthryl and phenanthryl radical; alkaryl radicals such as the o-, m- and p-tolyl radicals, the xylyl radicals and the ethylphenyl radicals; and aralkyl radicals such as the benzyl radical and the a- and b-phenylethyl radicals. The methyl radical is most preferred.

The amino silicones according to the invention have a viscosity of 1,000 to 15,000 mPa.s at 25°C, preferably of 1,500 to 15,000 mPa.s.

The amino silicones according to the invention have an amine index of 2 to 10 mg of KOH per gram of amino silicone, preferably of 3.5 to 8 mg.

The molar percentage of amine functionality is preferably in the range of about 0.3 to about 8%.

Examples of amino silicones useful in the silicone blend of the invention include a trialkylsilyl terminated amino silicone.

Preferably, the amino silicones are trimethylsilyl-terminated aminoethylaminopropylmethylsiloxane copolymers, most preferably trimethylsilyl-terminated aminoethylaminopropylmethylsiloxane – dimethylsiloxane copolymers. The amino radical A can be partially or fully protonated by adding acids to the amino silicone, whereby salt forms of the amino radical are obtained. Examples of acids are carboxylic acids with 3 to 18 carbon atoms which can be linear or branched, such as formic acid, acetic acid, propionic acid, butyric acid, pivalic acid, sorbic acid, benzoic acid, salicylic acid. The acids are preferably used in amounts of 0.1 to 2.0 mol per 1 mol of amino radical A in the amino silicone of formula (X).

The silicone mixture preferably comprises (i) one or more trialkylsilyl terminated dialkylpolysiloxanes having a viscosity of 40,000 to less than 100,000 mPa.s at 25°C in an amount of 70 to 90% by weight, preferably 75 to 85% by weight and (ii) one or more amino silicones having a viscosity of 1,000 to 15,000 mPa.s at 25°C and an amine number of 2 to 10 mg KOH per gram of amino silicone, in an amount of 10 to 30% by weight, preferably 15 to 25% by weight, based on the total weight of the silicone mixture.

• mixture of emulsifiers

The oil-in-water emulsion further comprises an emulsifier mixture comprising one or more nonionic emulsifiers. It may optionally comprise one or more cationic surfactants.

The emulsifier mixture has an HLB value of 10 to 16.

The nonionic emulsifiers may be selected from the nonionic surfactants described below.

Mention may be made of alcohols, α-diols and alkylphenols (C _1-20 ), these compounds being polyethoxylated and/or polypropoxylated and/or polyglycerolated, the number of ethylene oxide and/or propylene oxide groups optionally ranging from 1 to 100, and the number of glycerol groups optionally ranging from 2 to 30; or alternatively compounds comprising at least one fatty chain comprising from 8 to 30 carbon atoms and in particular from 16 to 30 carbon atoms.

Mention may also be made of condensates of ethylene oxide and propylene oxide with fatty alcohols; polyethoxylated fatty amides preferably having from 2 to 30 ethylene oxide units, polyglycerolated fatty amides comprising on average from 1 to 5, and in particular from 1.5 to 4, glycerol groups; ethoxylated fatty acid esters of sorbitan preferably containing from 2 to 40 ethylene oxide units, sucrose fatty acid esters, polyoxyalkylated esters and preferably polyoxyethylated fatty acid esters containing from 2 to 150 mol of ethylene oxide, including oxyethylenated vegetable oils, N-(C _6-24 alkyl)carbohydrate derivatives, amine oxides such as (C _10-14 alkyl)amine oxides or N-(C _10-14 acyl)aminopropylmorpholine oxides.

Mention may also be made of non-ionic surfactants of the alkyl(poly)glycoside type, represented in particular by the following general formula:

R ₁ O-(R ₂ O) _t -(G) _v

in which:

- R ₁ represents a linear or branched alkyl or alkenyl radical comprising from 6 to 24 carbon atoms, in particular from 8 to 18 carbon atoms, or an alkylphenyl radical whose linear or branched alkyl radical comprises from 6 to 24 carbon atoms, in particular from 8 to 18 carbon atoms;

- R ₂ represents an alkylene radical comprising from 2 to 4 carbon atoms,

- G represents a sugar unit comprising 5 to 6 carbon atoms,

- t denotes a value ranging from 0 to 10 and preferably 0 to 4,

- v denotes a value ranging from 1 to 15 and preferably 1 to 4.

Preferably, the alkylpolyglycoside surfactants are compounds of the formula described above in which:

- R ₁ denotes a saturated or unsaturated, linear or branched alkyl radical, comprising from 8 to 18 carbon atoms,

- R ₂ represents an alkylene radical comprising from 2 to 4 carbon atoms,

- t denotes a number ranging from 0 to 3, and preferably equal to 0,

- G denotes glucose, fructose or galactose, preferably glucose;

- the degree of polymerization, namely the value of v, possibly ranging from 1 to 15 and preferably from 1 to 4, the average degree of polymerization being more particularly between 1 and 2.

The glucoside bonds between the sugar units are generally of the 1-6 or 1-4 type, preferably of the 1-4 type. Preferably, the alkyl(poly)glycoside surfactant is an alkyl(poly)glucoside surfactant. C8 _{/C16 1,4-alkyl(poly)glycosides,} and in particular decyl glucosides and caprylyl/caprylyl glucosides, are particularly preferred.

Commercial products include products sold by COGNIS under the names PLANTAREN® (600 CS/U, 1200 and 2000) or PLANTACARE® (818, 1200 and 2000); products sold by SEPPIC under the names ORAMIX CG 110 and ORAMIX NS 10; products sold by BASF under the name LUTENSOL GD 70, or products sold by CHEM Y under the name AG10 LK.

The nonionic emulsifiers could preferably be chosen from ethoxylated aliphatic alcohols, polyoxyethylenated surfactants, carboxylic esters, polyethylene glycol esters, a sorbitol ester and its ethoxylated derivatives, fatty acid glycol esters, carboxylic amides, monoalkanolamine condensates, polyoxyethylenated fatty acid amides.

Preferably, the nonionic emulsifiers are selected from:

(i) polyoxyalkylene alkyl ethers, in particular (poly)ethoxylated fatty alcohols of formula:

R ₃ -(OCH ₂ CH ₂ ) _c OH

with :

- R ₃ representing a linear or branched C ₈ -C ₄₀ alkyl or alkenyl group, preferably C ₈ -C ₃₀ alkyl or alkenyl group, optionally substituted by one or more hydroxyl groups, and

- c being an integer between 1 and 200 inclusive, preferably between 2 and 150 and more particularly between 4 and 50, most preferably between 8 and 20.

(Poly)ethoxylated fatty alcohols are more particularly fatty alcohols comprising 8 to 22 carbon atoms, oxyethylated with 1 to 30 mol of ethylene oxide (1 to 30 EO);

(ii) polyoxyalkylene (C ₈ -C ₃₂ )alkylphenyl ethers,

(iii) polyoxyalkylenated sorbitan (C ₈ -C ₃₂ ) fatty acid esters, in particular polyethoxylated sorbitan fatty acid esters preferably containing from 2 to 40 ethylene oxide units, preferably from 2 to 20 ethylene oxide units; preferably polyoxyethylenated sorbitan (C ₁₀ -C ₂₄ ) fatty acid esters preferably containing from 2 to 40 ethylene oxide units, preferably from 2 to 20 ethylene oxide units; and

(iv) polyoxyethylenated fatty acid esters (C ₈ -C ₃₂ ) containing for example from 2 to 150 mol of ethylene oxide; preferably polyoxyethylenated fatty acid esters (C ₁₀ -C ₂₄ ) containing for example from 2 to 150 mol of ethylene oxide.

Preferably, the nonionic emulsifiers could be selected from polyalkylene glycol alkyl ether and polyalkylene glycol alkyl esters; preferably polyethylene glycol (PEG).

Some useful emulsifiers are:

- polyethylene glycol octyl ether; polyethylene glycol lauryl ether; polyethylene glycol tridecyl ether; polyethylene glycol cetyl ether; polyethylene glycol stearyl ether; among these, we may mention more particularly trideceth-3, trideceth-10 and steareth-6.

- polyethylene glycol nonylphenyl ether; polyethylene glycol dodecylphenyl ether; polyethylene glycol cetylphenyl ether; polyethylene glycol stearyphenyl ether;

- polyethylene glycol sorbitan monostearate, polyethylene glycol sorbitan monooleate.

- polyethylene glycol stearate, and in particular PEG-100 stearate.

Preferably, the nonionic emulsifiers are selected from steareth-6, PEG-100 stearate, trideceth-3 and trideceth-10 and mixtures of these compounds; preferably, all of these emulsifiers are present in the emulsifier mixture.

The emulsifier mixture may comprise one or more cationic emulsifiers which may be selected from tetraalkylammonium halides, tetraarylammonium halides, tetraalkylarylammonium halides and their salts; quaternary ammonium compounds, including salts; preferably, the cationic emulsifiers may be selected from cetrimonium halides or behentrimonium halides, such as the chloride.

The oil-in-water emulsion preferably comprises the mixture of emulsifiers in a total amount of 5 to 15% by weight, more preferably 8 to 15% by weight, most preferably 10 to 12% by weight, relative to the total weight of the emulsion.

The oil-in-water emulsion preferably comprises nonionic emulsifiers in a total amount of 5 to 15% by weight, more preferably 8 to 15% by weight, most preferably 10 to 12% by weight, relative to the total weight of the emulsion.

The oil-in-water emulsion preferably comprises cationic emulsifiers, if any, in a total amount of 0.5 to 1.5% by weight, based on the total weight of the emulsion.

The oil-in-water emulsion preferably comprises the silicone mixture in a total amount of 40 to 60% by weight, more preferably 45 to 55% by weight, relative to the total weight of the emulsion.

The oil-in-water emulsion preferably comprises the trialkylsilyl-terminated dialkylpolysiloxane(s) in a total amount of 35 to 45% by weight, more preferably 38 to 42% by weight, relative to the total weight of the emulsion.

The oil-in-water emulsion preferably comprises the amino silicone(s) in a total amount of 5 to 15% by weight, more preferably 8 to 12% by weight, relative to the total weight of the emulsion.

The oil-in-water emulsion preferably comprises water in an amount of 25 to 50% by weight, more preferably 30 to 45% by weight, most preferably 35 to 42% by weight, relative to the total weight of the emulsion.

The oil-in-water emulsion could also include a biocide, such as phenoxyethanol, which could be present in the emulsion in an amount of 0.5 to 1% by weight, based on the total weight of the emulsion.

A process for preparing the oil-in-water emulsion preferably comprises:

- a step of mixing one or more trialkylsilyl-terminated dialkylpolysiloxanes with a viscosity of 40,000 to less than 100,000 mPa.s at 25°C and one or more amino silicones with a viscosity of 1,000 to 15,000 mPa.s at 25°C and an amine index of 2 to 10 mg of KOH per gram of amino silicone, at a temperature of 15°C to 40°C, preferably at 25°C, to obtain a mixed silicone fluid, then

- a step of adding an emulsifier mixture comprising one or more non-ionic emulsifiers, wherein the emulsifier mixture has an HLB value of 10 to 16, to the mixed silicone fluid to obtain a silicone-emulsifier mixture, then

- a homogenization step of the silicone-emulsifier mixture followed by

- a step of adding, preferably in steps, water, preferably demineralized water, to obtain an oil-in-water emulsion having a particle size D50 of less than 350 nm.

The process for preparing the oil-in-water emulsion could include an additional step of adding a biocide. Biocide could be added to preserve the emulsion against microbial contamination. The biocide could be added at the level to preserve the emulsion against microbial contamination and obtain said emulsion. The amount of biocide depends on the type of biocide and the manufacturer's recommendations.

The preparation of the emulsifier mixture could be carried out by mixing one or more non-ionic emulsifiers.

The pH of the oil-in-water emulsion after neutralization (i.e. after addition of the biocide) is preferably 4 to 6.

The oil-in-water emulsion has a particle size D50 of less than 350 nm, preferably from 100 to 300 nm, more preferably from 150 to 250 nm, even more preferably from 150 to 225 nm, and most preferably from 160 to 200 nm. The particle size D50 corresponds to the hydrodynamic mean diameter of the particles and is expressed in volume. The particle size D50 can be measured using a ZetaSizer apparatus from Malvern, United Kingdom, model Nano-ZS, which is based on the photon correlation spectroscopy (PCS) method.

• Particle size measurement

The emulsion particle size can be measured using a ZetaSizer instrument from Malvern, UK, model Nano-ZS, based on the photon correlation spectroscopy (PCS) method. The D50 value of the particle size (mean hydrodynamic diameter of the particles) is measured, the evaluation algorithm being the “cumulant analysis”.

For example, take 0.5 g of the emulsion sample into a 250 mL beaker, pour 100 mL of deionized water into it, and then mix them properly to obtain the sample test solution. The sample test solution is poured into the cuvette cell and placed in the slot of the instrument to measure the particle size of the emulsion. D50 is defined as the value of the 50% particle diameter in the cumulative distribution. For example, if D50=170 nm, 50% of the particles in the sample are larger than 170 nm and 50% smaller than 170 nm or about 50% by volume of all the droplets in said emulsion are 170 nm.

• Viscosity measurement

Viscosity, especially of silicones or emulsion, is measured at 25°C and atmospheric pressure.

For viscosities between 1,000 and 40,000 mPa.s at 25 °C: Viscosity can be measured using an Anton Paar rheometer; model MCR101, single-gap cylinder geometry: CC27 spindle and shear rate of 1 s ^-1 for 2 minutes, at 25 °C.

For viscosities between 40,000 and 100,000 mPa.s at 25 °C: viscosity can be measured using an Anton Paar rheometer; model MCR101, cone 25-6 (cone-plate geometry: 25 mm dia./cone 6°); the “zero air gap” setting being carried out and with a shear rate of 1 s-1 for 2 minutes, at 25 °C.

Three measurements are made for each sample and the viscosity value is taken at 60 seconds. MCR Rheometer range products operate in accordance with USP (US Pharmacopeia Convention) 912 – Rotational Rheometer Methods.

• Measurement of the amine index

The amine value is determined by acid-base titration using a potentiometer [Brand: Veego; Model: VPT-MG]. 0.6 g of sample is taken into a 500 mL beaker and a 1:1 toluene-butanol mixture is added and stirred to mix the sample well; the sample solution is then titrated with 0.1(N) HCl solution. A blank value determination with the 1:1 toluene-butanol mixture is also performed. The calculation of the amine value is performed using the aforementioned potentiometer.

The amine index is calculated according to the formula:

56.11 × (V – V _blank) × N / W mg KOH/g sample,

in which

V = volume of HCl required in mL, V _blank = volume of HCl for blank value (without sample) with the toluene-butanol mixture 1:1 in mL;

N= Normality of HCl, i.e. 0.1 N, W= weight of the sample taken in grams.

• HLB value

The term HLB is well known to those skilled in the art and denotes the hydrophilic-lipophilic balance of a surfactant or emulsifier. In the present invention, HLB values refer to values at 25 °C and atmospheric pressure.

HLB can be measured by experimental determination or can be calculated.

The calculation of the HLB value of a nonionic surfactant is done according to the following equation: HLB = (E + P)/5, E being the weight percentage of the oxyethylene content and P being the weight percentage of the polyhydric alcohol content, described in the publication Griffin, J. Soc. Cosm. Chem. 1954 (vol.5, no.4), pp.249-256.

It can also be determined experimentally according to the book by F. Puisieux and M. Seiller entitled “Galenica 5: Dispersed systems – Volume I – surfactants and emulsions – Chapter IV – Notions of HLB and critical HLB, pp.153-194 – paragraph 1.1.2. Determination of HLB by experimental means, pp.164-180”.

The calculated HLB is the preferred HLB values that should be considered.

This calculated HLB could be defined as follows:

“Calculated HLB = 20 × molar mass of the hydrophilic part/total molar mass”.

For an oxyethylated fatty alcohol, the hydrophilic part corresponds to the oxyethylene units condensed on the fatty alcohol and the “calculated HLB” then corresponds to the “Griffin HLB” as defined above.

For an ester or amide, the hydrophilic part is naturally defined as being located beyond the carbonyl group, starting with the fatty chain(s).

For ionic surfactants/emulsifiers, the HLB value of each surfactant/emulsifier can be calculated by applying the Davies formula as described in Davies JT (1957), “A quantitative kinetic theory of emulsion type, I. Physical chemistry of the emulsifying agent,” Gas/Liquid and Liquid/Liquid Interface (Proceedings of the International Congress on Surface Activity): 426-438.

According to the formula, HLB is derived by summing the hydrophilic/hydrophobic contribution offered by the structural components of the emulsifier:

HLB = (number of hydrophilic groups) - n(number of groups per _CH2 group) +7.

Approximate HLB values for some cationic emulsifiers are given in Table IV, in "Cationic emulsifiers in cosmetics", GODFREY, J. Soc. Cosmetic Chemists (1966) 17, pp. 17-27.

When two emulsifiers A and B of known HLB are mixed for use, the HLBmixture is said to be the HLB required for the mixture. This is expressed by the equation (W _A HLB _A + W _B HLB _B )/(W _A + W _B ) = HLB _Mixture , where W _A = the amount (weight) of the first emulsifier (A) used, and W _B = the amount (weight) of the second emulsifier (B); HLB _A , HLB _B = the HLB values assigned to emulsifiers A and B; HLB _Mixture = the HLB of the mixture.

The oil-in-water emulsion used in the present invention is for example described in WO 2017/108824.

The composition according to the invention preferably comprises the oil-in-water emulsion a) in an amount ranging from 0.1% to 20% by weight, more preferably from 0.3% to 15% by weight, even more preferably from 0.5% to 12% by weight, better still from 1 to 10%, better still from 1.5 to 5% by weight, relative to the total weight of the composition.

The composition according to the invention preferably comprises the dialkylpolysiloxane(s) terminated by trialkylsilyl having a viscosity of 40,000 to less than 100,000 mPa.s at 25°C in a total amount ranging from 0.1% to 8% by weight, more preferably from 0.2% to 5% by weight, even more preferably from 0.5% to 4% by weight, better still from 0.6 to 3% by weight, relative to the total weight of the composition.

The composition according to the invention preferably comprises the amino silicone(s) having a viscosity of 1,000 to 15,000 mPa.s at 25°C and an amine index of 2 to 10 mg of KOH per gram of amino silicone, in a total amount ranging from 0.01% to 5% by weight, more preferably from 0.05% to 3% by weight, even more preferably from 0.1% to 2% by weight, better still from 0.15 to 1% by weight, relative to the total weight of the composition.

b) Cationic polysaccharides

The composition according to the invention comprises one or more cationic polysaccharides.

The term “cationic polysaccharide” means any polysaccharide comprising cationic groups and/or groups which can be ionized to cationic groups, and not comprising anionic groups and/or groups which can be ionized to anionic groups.

Among the cationic polysaccharides, mention may be made more particularly of cellulose ether derivatives comprising quaternary ammonium groups, cationic cellulose copolymers or cellulose derivatives grafted with a water-soluble quaternary ammonium monomer, and cationic galactomannan gums.

Cellulose ether derivatives containing quaternary ammonium groups are described in particular in document FR 1 492 597, and mention may be made of the polymers sold under the name Ucare Polymer JR (JR 400 LT, JR 125 and JR 30M) or LR (LR 400 and 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.

Cationic cellulose copolymers or cellulose derivatives grafted with a water-soluble quaternary ammonium monomer are described in particular in US Pat. No. 4,131,576, and hydroxyalkylcelluloses may be mentioned, for example hydroxymethyl, hydroxyethyl or hydroxypropylcelluloses in particular grafted with a methacryloylethyltrimethylammonium, methacrylamidopropyltrimethylammonium or dimethyldiallylammonium salt. The commercial products corresponding to this definition are more particularly the products sold under the names Celquat L 200 and Celquat H 100 by the company National Starch.

Cationic galactomannan gums are described more particularly in US Patents 3,589,578 and US Patent 4,031,307, and mention may be made of guar gums comprising cationic trialkylammonium groups, preferably C1-C6 trialkylammonium groups. For example, guar gums modified with a 2,3-epoxypropyltrimethylammonium salt (for example the chloride) may be used. Such products are notably marketed under the names JAGUAR C13 S, JAGUAR C 15, JAGUAR C 17 and JAGUAR C162 by the company Rhodia.

Preferably, the cationic polysaccharide(s) is (are) chosen from cationic celluloses, cationic galactomannan gums and mixtures thereof.

Preferably, the cationic polysaccharide(s) is (are) selected from cellulose ether derivatives comprising quaternary ammonium groups, guar gums comprising cationic trialkylammonium groups and mixtures thereof.

Preferably, the cationic polysaccharide(s) is (are) selected from cationic galactomannan gums, better still from guar gums comprising cationic trialkylammonium groups. Even better, the cationic polysaccharide is guar hydroxypropyl ammonium chloride.

Preferably, the total amount of cationic polysaccharide(s) b) varies from 0.01 to 5% by weight, more preferably from 0.015 to 4% by weight, even more preferably from 0.02 to 3% by weight, better still from 0.05 to 2% by weight, and better still from 0.1 to 1% by weight, relative to the total weight of the composition.

Preferably, when the cationic polysaccharide is a guar gum comprising cationic trialkylammonium groups, the total amount of said cationic polysaccharide ranges from 0.01 to 5% by weight, more preferably from 0.015 to 4% by weight, even more preferably from 0.02 to 3% by weight, better still from 0.05 to 2% by weight, and better still from 0.1 to 1% by weight, relative to the total weight of the composition.

Preferably, when the cationic polysaccharide is guar hydroxypropyltrimonium chloride, the total amount of said cationic polysaccharide ranges from 0.01 to 5% by weight, more preferably from 0.015 to 4% by weight, even more preferably from 0.02 to 3% by weight, better still from 0.05 to 2% by weight, and better still from 0.1 to 1% by weight, relative to the total weight of the composition.

c) α-olefin sulfonate anionic surfactants

The composition according to the invention also comprises one or more anionic polymers chosen from α-olefin sulfonates.

By "anionic surfactant" is meant a surfactant comprising, as ionic or ionizable groups, only anionic groups.

In the present description, a species is said to be "anionic" when it carries at least one permanent negative charge or when it can be ionized as a negatively charged species, under the conditions of use of the composition of the invention (for example the medium or the pH) and not comprising any cationic charge.

It is understood in the present description that the anionic sulfonate surfactants comprise at least one sulfonate function (-SO ₃ H or -SO ₃ ^- ) and may optionally also comprise one or more sulfate functions, but do not comprise carboxylate functions.

The alkyl groups of these anionic sulfonate surfactants comprise from 6 to 30 carbon atoms, in particular from 8 to 28, better still from 10 to 24 or even from 12 to 22 carbon atoms, or even better from 12 to 20 carbon atoms; the aryl group preferably designating a phenyl or benzyl group.

These compounds are optionally polyoxyalkylenated, in particular polyoxyethylenated, and then preferably comprise from 1 to 50 ethylene oxide units and better still from 2 to 10 ethylene oxide units.

When the α-olefin sulfonate anionic surfactant is 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, and alkaline earth metal salts, such as the magnesium salt.

Preferably, the anionic α-olefin sulfonate surfactants are chosen, alone or as a mixture, from C ₆ -C ₂₄ and in particular C ₁₂ -C ₂₀ α-olefin sulfonates, in particular in the form of alkali or alkaline-earth metal, ammonium or amino alcohol salts.

Preferably, the anionic surfactant(s) of sulfonate type is/are chosen from α-olefin sulfonates, and in particular C ₆ -C ₂₄ and in particular C ₁₂ -C ₂₀ α-olefin sulfonates, as well as their salts and their mixtures.

The total content of anionic surfactant(s) chosen from α-olefin sulfonates and their mixtures preferably ranges from 0.1 to 25% by weight, more preferably from 1 to 20% by weight, preferably from 3 to 15% by weight and more preferably from 5 to 10% by weight relative to the total weight of the composition.

In a preferred embodiment, the total content of anionic surfactant(s) chosen from α-olefin sulfonates (C ₆ -C ₂₄ and in particular C ₁₂ -C ₂₀ and their mixtures, preferably ranges from 0.1 to 25% by weight, more preferably ranges from 1 to 20% by weight, preferably from 3 to 15% by weight and more preferably from 5 to 10% by weight relative to the total weight of the composition.

d) amphoteric or zwitterionic surfactants

The composition according to the invention also comprises one or more amphoteric or zwitterionic surfactants.

In particular, the amphoteric or zwitterionic surfactant(s) which may be used in the present invention, which are preferably non-silicone, may in particular be derivatives of optionally quaternized secondary or tertiary aliphatic amines, derivatives 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, for example a carboxylate, sulfonate, sulfate, phosphate or phosphonate group.

Mention may in particular be made of ( _C8 - _C20 )alkylbetaines, ( _C8 - _C20 )alkylsulfobetaines, ( _C8 - _C20 )alkylamido( _C1 - _C6 )alkylbetaines and ( _C8 - _C20 )alkylamido( _C1 - _C6 )alkylsulfobetaines, and mixtures thereof.

Among the optionally quaternized derivatives of secondary or tertiary aliphatic amines which may be used, as defined above, there may also be mentioned compounds corresponding to the respective structures (III) and (IV) below:

R _a -CONHCH ₂ CH ₂ -N ⁺ (R _b )(R _c )-CH ₂ COO ^- , M ⁺ , X ^- (III)

formula (III) in which:

- R _a represents a C ₁₀ to C ₃₀ alkyl or alkenyl group derived from an acid R _a COOH preferably present in hydrolyzed coconut kernel oil; preferably R _a represents a heptyl, nonyl or undecyl group;

- R _b represents a β-hydroxyethyl group;

- R _c represents a carboxymethyl group;

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

- X ^- represents an organic or inorganic anionic counterion, such as that selected from halides, acetates, phosphates, nitrates, (C ₁ -C ₄ )alkyl sulfates, (C ₁ -C ₄ )alkyl- or (C ₁ -C ₄ )alkylarylsulfonates, in particular methyl sulfate and ethyl sulfate; or M ⁺ and X ^- are absent;

R _a '-CONHCH ₂ CH ₂ -N(B)(B') (IV)

in which formula (IV):

- B represents the group -CH ₂ CH ₂ OX';

- B' represents the group -(CH ₂ ) _z Y', with z = 1 or 2;

- X' represents the group -CH ₂ COOH, -CH ₂ -COOZ', -CH ₂ CH ₂ COOH or CH ₂ CH ₂ -COOZ', or a hydrogen atom;

- Y' represents the group -COOH, -COOZ' or -CH ₂ CH(OH)SO ₃ H or the group CH ₂ CH(OH)SO ₃ -Z';

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

- R _a' represents a C ₁₀ to C ₃₀ alkyl or alkenyl group of an acid R _a' -COOH which is preferably present in coconut kernel oil or in hydrolyzed linseed oil, preferably R _a' is an alkyl group, in particular a C ₁₇ group, and its iso form, or an unsaturated C ₁₇ group.

These compounds are classified in the CTFA Dictionary, 5th Edition, 1993, as disodium cocoamphodiacetate, disodium lauroamphodiacetate, disodium caprylamphodiacetate, disodium capryloamphodiacetate, disodium cocoamphodipropionate, disodium lauroamphodipropionate, disodium caprylamphodipropionate, disodium capryloamphodipropionate, lauroamphodipropionic acid, and cocoamphodipropionic acid.

An example is cocoamphodiacetate sold by the company Rhodia under the trade name Miranol ^® C2M Concentrate.

Compounds of formula (V) can also be used:

R _a” -NHCH(Y”)-(CH ₂ ) _n CONH(CH ₂ ) _n’ -N(R _d )(R _e ) (V)

formula (V) in which:

- Y" represents the group -COOH, -COOZ" or -CH ₂ -CH(OH)SO ₃ H or the group CH ₂ CH(OH)SO ₃ -Z";

- R _d and R _e represent, independently of one another, a C ₁ to C ₄ alkyl or hydroxyalkyl radical;

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

- R _a" represents a C ₁₀ to C ₃₀ alkyl or alkenyl group of an acid R _a" -COOH which is preferably present in coconut kernel oil or in hydrolyzed linseed oil; and

- n and n' designate, independently of each other, an integer ranging from 1 to 3.

Among the compounds of formula (V), mention may be made of the compound classified in the CTFA dictionary under the name sodium diethylaminopropyl cocoaspartamide and sold by the company Chimex under the name Chimexane HB.

These compounds can be used alone or in mixtures.

Among the amphoteric or zwitterionic surfactants mentioned above, advantageously used are (C ₈ -C ₂₀ )alkylbetaines, such as cocoylbetaine, (C ₈ -C ₂₀ )alkylamido(C ₃ -C ₈ )alkylbetaines, such as cocamidopropylbetaine, (C ₈ -C ₂₀ )alkylamphoacetates, (C ₈ -C ₂₀ )alkylamphodiacetates and mixtures thereof; and preferably (C ₈ -C ₂₀ )alkylbetaines, (C ₈ -C ₂₀ )alkylamido(C ₃ -C ₈ )alkylbetaines and mixtures thereof.

Preferably, the amphoteric or zwitterionic surfactant(s) are chosen from ( _C8 - _C20 )alkylbetaines, ( _C8 - _C20 )alkylamido( _C3 - _C8 )alkylbetaines and mixtures thereof, better still from ( _C8 - _C20 )alkylamido( _C3 - _C8 )alkylbetaines and mixtures thereof.

More preferably, the composition according to the invention comprises one or more amphoteric or zwitterionic surfactants chosen from (C ₈ -C ₂₀ )alkylbetaines and one or more amphoteric or zwitterionic surfactants chosen from (C ₈ -C ₂₀ )alkylamido(C ₃ -C ₈ )alkylbetaines.

The total content of amphoteric or zwitterionic surfactant(s) preferably ranges from 0.1 to 15% by weight, more preferably from 0.5 to 10% by weight, and better still from 1 to 5% by weight, relative to the total weight of the composition.

In a preferred embodiment, the total content of amphoteric or zwitterionic surfactants chosen from ( _C8 - _C20 )alkylbetaines, ( _C8 - _C20 )alkylamido( _C3 - _C8 )alkylbetaines and their mixtures ranges from 0.1 to 15% by weight, more preferably from 0.5 to 10% by weight, and better still from 1 to 5% by weight relative to the total weight of the composition.

Additional anionic surfactants other than α-olefin sulfonates c)

The composition according to the invention may further comprise one or more anionic surfactants other than the α-olefin sulfonates c). These anionic surfactants are called additional anionic surfactants.

The additional anionic surfactants may be sulfate and/or carboxylic (or carboxylate) surfactants, preferably carboxylic surfactants. It goes without saying that a mixture of these surfactants may be used.

The anionic carboxylate surfactants which can be used therefore comprise at least one carboxylic or carboxylate function (-COOH or -COO ^- ).

They can be chosen from the following compounds: fatty acids, acylglycinates, acyllactylates, acylsarcosinates, acylglutamates; alkyl-D-galactosideuronic acids, alkyl ether carboxylic acids, alkyl(C ₆ -C ₃₀ aryl) ether carboxylic acids, alkylamido ether carboxylic acids; as well as the salts of compounds; and their mixtures;

the alkyl and/or acyl groups of these compounds comprising from 6 to 30 carbon atoms, in particular from 12 to 28, better still from 14 to 24 or even from 16 to 22 carbon atoms; the aryl group preferably designating a phenyl or benzyl group;

these compounds being optionally polyoxyalkylenated, in particular polyoxyethylenated, and then preferably comprising from 1 to 50 ethylene oxide units and better still from 2 to 10 ethylene oxide units.

Also useful are _C6 - _C24 alkyl monoesters of polyglycoside-polycarboxylic acids such as _C6 - _C24 alkyl polyglycoside-citrates, _C6 - _C24 alkyl polyglycoside-tartrates and _C6 - _C24 alkyl polyglycoside-sulfosuccinates, and their salts.

Preferably, the carboxylate anionic surfactants are chosen, alone or as a mixture, from:

- fatty acids;

- acylglutamates, in particular _C6 - _C24 or even _C12 - _C20 , such as stearoylglutamates, and in particular disodium stearoylglutamate;

- acylsarcosinates, in particular _C6 - _C24 or even _C12 - _C20 , such as palmitoylsarcosinates and in particular sodium palmitoylsarcosinate;

- acyllactylates, in particular C ₁₂ -C ₂₈ or even C ₁₄ -C ₂₄ , such as behenoyllactylates, and in particular sodium behenoyllactylate;

- _C6 - _C24 acylglycinates and in particular _C12 - _C20 ;

- (C ₆ -C ₂₄ )alkyl ether carboxylates, and in particular (C ₁₂ -C ₂₀ )alkyl ether carboxylates;

- polyoxyalkylenated ( _C6 - _C24) alkyl (amido) ether carboxylic acids, in particular those containing from 2 to 50 ethylene oxide groups;

in particular in the form of alkali metal or alkaline earth metal, ammonium or amino alcohol salts.

Among the above carboxylic surfactants, mention may be made more particularly of surfactants of the fatty acid type, in particular C ₆ - C ₃₀ . These surfactants are preferably chosen from the compounds of formula (a) below: RC(O)-OX (a)

with

- X denoting a hydrogen atom, an ammonium ion, an ion derived from an alkali or alkaline-earth metal or an ion derived from an organic amine, preferably a hydrogen atom, and

- R denoting a linear or branched, saturated or unsaturated alkyl group of 5 to 29 carbon atoms.

Preferably, R denotes a linear or branched, saturated or unsaturated alkyl group of 7 to 23 carbon atoms, preferably of 11 to 21 carbon atoms.

Fatty acids include lauric acid, palmitic acid, myristic acid, stearic acid, oleic acid and behenic acid.

The fatty acids are advantageously chosen from palmitic acid, myristic acid, stearic acid and their mixtures.

Among the above carboxylic surfactants, mention may be made more particularly of sarcosinate type surfactants, notably chosen from the (C ₆ -C ₃₀ )acyl sarcosinates of formula (I) below:

RC(O)-N(CH ₃ )-CH ₂ -C(O)-OX (I)

with

- X denoting a hydrogen atom, an ammonium ion, an ion derived from an alkali or alkaline-earth metal or an ion derived from an organic amine, preferably a hydrogen atom, and

- R denoting a linear or branched alkyl group of 5 to 29 carbon atoms.

Preferably, R denotes a linear or branched alkyl group of 8 to 24 carbon atoms, preferably of 12 to 20 carbon atoms.

Among the ( _C6 - _C30 )acyl sarcosinates of formula (I) which may be used in the present composition, mention may be made of palmitoyl sarcosinates, stearoyl sarcosinates, myristoyl sarcosinates, lauroyl sarcosinates and cocoyl sarcosinates, in acid form or in salified form.

The anionic surfactant(s) of sarcosinate type are advantageously chosen from sodium lauroyl sarcosinate, stearoylsarcosine, myristoylsarcosine and their mixtures, preferably from stearoylsarcosine, myristoylsarcosine and their mixtures.

Among the above carboxylic surfactants, mention may also be made of polyoxyalkylenated alkyl(amido) ether carboxylic acids and their salts, in particular those comprising from 2 to 50 alkylene oxide groups and in particular ethylene oxide groups, such as the compounds sold by the company Kao under the names Akypo.

The polyoxyalkylenated alkyl(amido) ether carboxylic acids which can be used are preferably chosen from those of formula (II):

R1-(OC ₂ H ₄ ) _n -OCH ₂ COOA (II)

in which:

- R1 represents a linear or branched _C6 - _C24 alkyl or alkenyl radical, a _C8 - _C9 alkylphenyl radical, a radical _R2 CONH- _CH2 - _CH2- with R2 denoting a linear or branched _C9 - _C21 alkyl or alkenyl radical;

preferably, R1 is a _C8 - _C20 and preferably _C8 - _C18 alkyl radical, and aryl preferably denotes phenyl,

- n is an integer or decimal number (average value) ranging from 2 to 24 and preferably from 2 to 10,

- A denotes H, ammonium, Na, K, Li, Mg or a residue of monoethanolamine or triethanolamine.

Mixtures of compounds of formula (II) may also be used, in particular mixtures of compounds belonging to different R1 groups.

The polyoxyalkylenated alkyl(amido) ether carboxylic acids which are particularly preferred are those of formula (II) in which:

- R1 denotes a _C12 - _C14 alkyl radical, cocoyl, oleyl, nonylphenyl or octylphenyl,

- A denotes a hydrogen or sodium atom, and

- n ranges from 2 to 20, preferably from 2 to 10.

Even more preferably, compounds of formula (II) are used in which R1 denotes a _C12 alkyl radical, A denotes a hydrogen or sodium atom and n ranges from 2 to 10.

Preferably, the additional anionic surfactants other than the α-olefin sulfonates c) are chosen from carboxylic surfactants, preferably from (C ₆ -C ₃₀ )acyl sarcosinates of formula (I), more preferably from sodium lauroyl sarcosinate, stearoylsarcosine, myristoylsarcosine and mixtures thereof, preferably from stearoylsarcosine, myristoylsarcosine and mixtures thereof, even more preferably, the additional anionic surfactant is sodium lauroyl sarcosinate.

The total content of additional anionic surfactants other than the α-olefin sulfonates c) preferably ranges from 0.1 to 15% by weight, more preferably from 0.5 to 10% by weight, and better still from 0.7 to 5% by weight, relative to the total weight of the composition.

In a preferred embodiment, the total content of carboxylic surfactants, preferably among the (C ₆ -C ₃₀ )acyl sarcosinates, preferably ranges from 0.1 to 15% by weight, more preferably from 0.5 to 10% by weight, and better still from 0.7 to 5% by weight, relative to the total weight of the composition.

Preferably, the composition according to the invention does not comprise an anionic surfactant of sulfate type.

The total content of anionic surfactant(s) (i.e. α-olefin sulfonates and additional anionic surfactants) preferably ranges from 0.1 to 30% by weight, more preferably 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.

Additional cationic polymers different from cationic polysaccharides b)

The composition according to the invention may further comprise one or more cationic polymers different from the cationic polysaccharides b). These cationic polymers are called additional cationic polymers; they are different from the cationic polysaccharides.

Cationic polymers are not silicone-based (they do not include Si-O units).

Cationic polymers can be associative or non-associative.

Preferred cationic polymers are selected from those which contain units comprising primary, secondary, tertiary and/or quaternary amine groups which may be part of the main polymer chain or be carried by a directly attached side substituent.

Preferably, the cationic polymers according to the invention do not comprise any anionic group or any group ionizable into anionic groups.

The cationic polymers which can be used preferably have a weight average molar mass (Mw) of between approximately 500 and 5×106 and preferably between approximately 103 and 3×106.

Among the cationic polymers, we can cite more particularly:

(1) homopolymers or copolymers derived from acrylic or methacrylic esters or amides and comprising at least one of the units corresponding to the following formulae:

formulas in which:

R ₃ , which may be the same or different, denotes a hydrogen atom or a CH ₃ radical;

- A, which may be the same or different, represent a linear or branched divalent alkyl group of 1 to 6 carbon atoms, preferably 2 or 3 carbon atoms, or a hydroxyalkyl group of 1 to 4 carbon atoms;

R ₄ , R ₅ and R ₆ , which may be identical or different, represent an alkyl group containing from 1 to 18 carbon atoms or a benzyl radical and preferably an alkyl group containing from 1 to 6 carbon atoms;

- R ₁ and R ₂ , which may be the same or different, represent a hydrogen atom or an alkyl group containing from 1 to 6 carbon atoms, preferably methyl or ethyl; and

- X denotes an anion derived from a mineral or organic acid, such as a methosulfate anion or a halide such as chloride or bromide.

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 (C ₁ -C ₄ ), acrylic or methacrylic acids or their esters, vinyllactams such as vinylpyrrolidone or vinylcaprolactam, and vinyl esters.

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

- copolymers of acrylamide and dimethylaminoethyl methacrylate quaternized with dimethyl sulfate or with a dimethyl halide, such as the product sold under the name Hercofloc by the company Hercules,

- copolymers of acrylamide and methacryloyloxyethyltrimethylammonium chloride, such as the products sold under the name Bina Quat P 100 by the company Ciba Geigy,

- the copolymer of acrylamide and methacryloyloxyethyltrimethylammonium methosulfate, such as the product sold under the name Reten by the company Hercules,

- vinylpyrrolidone/dialkylaminoalkyl acrylate or methacrylate copolymers, quaternized or not, such as the products sold under the name Gafquat by the company ISP, for example Gafquat 734 or Gafquat 755, or the products known under the name Copolymer 845, 958 and 937. These polymers are described in detail in French patents 2,077,143 and 2,393,573,

- dimethylaminoethyl methacrylate/vinylcaprolactam/vinylpyrrolidone terpolymers, such as the product sold under the name Gaffix VC 713 by the company ISP,

- vinylpyrrolidone/methacrylamidopropyldimethylamine copolymers, such as the products sold under the name Styleze CC 10 by the company ISP;

- quaternized vinylpyrrolidone/dimethylaminopropylmethacrylamide copolymers such as the product sold under the name Gafquat HS 100 by the company ISP;

- polymers, preferably crosslinked, of methacryloyloxy(C ₁ -C ₄ )alkyltri(C ₁ -C ₄ )alkylammonium salts, such as polymers obtained by homopolymerization of dimethylaminoethyl methacrylate quaternized with methyl chloride, or by copolymerization of acrylamide with dimethylaminoethyl methacrylate quaternized with methyl chloride, the homo- or copolymerization being followed by crosslinking with an olefinically unsaturated compound, in particular methylenebisacrylamide. It is possible to use more particularly a crosslinked acrylamide/methacryloyloxyethyltrimethylammonium chloride copolymer (20/80 by weight) in the form of a dispersion comprising 50% by weight of said copolymer in a mineral oil. This dispersion is marketed under the name Salcare ^® SC 92 by the company Ciba. A crosslinked homopolymer of methacryloyloxyethyltrimethylammonium chloride comprising about 50% by weight of the homopolymer in a mineral oil or in a liquid ester may also be used. These dispersions are marketed under the names Salcare ^® SC 95 and Salcare ^® SC 96 by the company Ciba.

(2) polymers formed from piperazinyl units and divalent alkylene or hydroxyalkylene radicals containing linear or branched chains, optionally interrupted by oxygen, sulfur or nitrogen atoms or by aromatic or heterocyclic rings, as well as the oxidation and/or quaternization products of these polymers.

(3) water-soluble polyaminoamides prepared in particular by polycondensation of an acidic compound with a polyamine; these polyaminoamides may be crosslinked with an epihalohydrin, a diepoxide, a dianhydride, an unsaturated dianhydride, a bis-unsaturated derivative, a bis-halohydrin, a bis-azetidinium, a bis-haloacyldiamine, a bis-alkyl halide or alternatively with an oligomer resulting from the reaction of a difunctional compound which is reactive with a bis-halohydrin, a bis-azetidinium, a bis-haloacyldiamine, a bis-alkyl halide, an epihalohydrin, a diepoxide or a bis-unsaturated derivative; the crosslinking agent being used in ranges from 0.025 to 0.35 mol per alkyl group of the polyaminoamide; these polyaminoamides can be alkylated or, if they include one or more tertiary amine functions, they can be quaternized;

(4) polyamino amide derivatives resulting from the condensation of polyalkylene polyamines with polycarboxylic acids followed by alkylation with difunctional agents. Examples include adipic acid/dialkylaminohydroxyalkyldialkylenetriamine polymers in which the alkyl radical contains 1 to 4 carbon atoms and preferably denotes methyl, ethyl or propyl. Among these derivatives, more particularly include adipic acid/dimethylaminohydroxypropyl/diethylenetriamine polymers sold under the name Cartaretine F, F4 or F8 by the company Sandoz.

(5) polymers obtained by reacting a polyalkylene polyamine including two primary amine groups and at least one secondary amine group with a dicarboxylic acid selected from diglycolic acid and saturated aliphatic dicarboxylic acids containing from 3 to 8 carbon atoms; the molar ratio between the polyalkylene polyamine and the dicarboxylic acid being preferably 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 sold in particular under the name Hercosett 57 by the company Hercules Inc. or under the name PD 170 or Delsette 101 by the company Hercules in the case of the adipic acid/epoxypropyl/diethylenetriamine copolymer.

(6) alkyldiallylamine or dialkyldiallylammonium cyclopolymers, such as homopolymers or copolymers including, as the main constituent of the chain, units corresponding to formula (VI) or (VII):

formulas (VI) and (VII) in which:

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

- R ₁₂ denotes a hydrogen atom or a methyl radical;

- R ₁₀ and R ₁₁ , independently of each other, denote an alkyl group containing from 1 to 6 carbon atoms, a hydroxyalkyl group in which the alkyl group contains from 1 to 5 carbon atoms, a C ₁ to C ₄ amidoalkyl group; or alternatively R ₁₀ and R ₁₁ may denote, together with the nitrogen atom to which they are bonded, heterocyclic groups such as piperidinyl or morpholinyl; R ₁₀ and R ₁₁ , independently of each other, preferentially denote an alkyl group containing from 1 to 4 carbon atoms; and

- Y ^- is an anion such as bromide, chloride, acetate, borate, citrate, tartrate, bisulfate, bisulfite, sulfate or phosphate.

Particular mention may be made of the homopolymer of dimethyldiallylammonium salt (e.g. chloride) (INCI name: POLYQUATERNIUM 6) sold under the name Merquat 100 by the company Nalco (and its counterparts with low weight average molar masses) and the copolymers of diallyldimethylammonium salts (e.g. chloride) and acrylamide (INCI name POLYQUATERNIUM 7), notably sold under the names Merquat 550 and Merquat 7SPR.

(7) quaternary diammonium polymers comprising repeating units of formula:

formula (VIII) in which:

- R ₁₃ , R ₁₄ , R ₁₅ and R ₁₆ , which may be identical or different, represent aliphatic, alicyclic or arylaliphatic radicals containing from 1 to 20 carbon atoms or lower hydroxyalkylaliphatic radicals, or alternatively R ₁₃ , R ₁₄ , R ₁₅ and R ₁₆ , together or separately, constitute, with the nitrogen atoms to which they are attached, heterocycles optionally comprising a second non-nitrogenous heteroatom, or R ₁₃ , R ₁₄ , R ₁₅ and R ₁₆ represent a linear or branched C ₁ to C ₆ alkyl radical, substituted by a nitrile, ester, acyl or amide group or a -CO-OR ₁₇ -D or -CO-NH-R ₁₇ -D group where R ₁₇ is an alkylene and D an ammonium group quaternary;

- A ₁ and B ₁ represent divalent polymethylene groups comprising from 2 to 20 carbon atoms which may be linear or branched, and saturated or unsaturated, and which may contain, linked to or inserted into the main chain, one or more aromatic rings, or one or more oxygen or sulfur atoms or sulfoxide, sulfone, disulfide, amino, alkylamino, hydroxyl, quaternary ammonium, ureido, amide or ester groups; and

- X ^- denotes an anion derived from a mineral or organic acid;

it being understood that A ₁ , R ₁₃ and R ₁₅ can form, with the two nitrogen atoms to which they are attached, a piperazine ring;

furthermore, if A ₁ denotes a linear or branched, saturated or unsaturated alkylene or hydroxyalkylene radical, B ₁ can also denote a group (CH ₂ ) _n CO-D-OC-(CH ₂ ) _n - in which D denotes:

(a) a glycol residue of formula -OZO-, in which Z denotes a linear or branched hydrocarbon radical, or a group corresponding to one of the following formulae: -(CH ₂ -CH ₂ -O) _x -CH ₂ -CH ₂ - and -[CH ₂ CH(CH ₃ )-O] _y -CH ₂ -CH(CH ₃ )-, 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;

(b) a bis-secondary diamine residue, such as a piperazine derivative;

(c) a bis-primary diamine residue of formula: -NH-Y-NH-, where Y denotes a linear or branched hydrocarbon radical, or alternatively the divalent radical -CH ₂ -CH ₂ -SS-CH ₂ -CH ₂ ; or

d) a ureylene group of formula: -NH-CO-NH-.

Preferably, X ^- is an anion such as chloride or bromide. These polymers have a number average molar mass (Mn) generally between 1,000 and 100,000.

We can cite more particularly polymers made up of repeating units corresponding to the formula:

formula (IX) in which R ₁ , R ₂ , R ₃ and R ₄ , which may be the same or different, denote an alkyl or hydroxyalkyl radical containing from 1 to approximately 4 carbon atoms, n and p are integers ranging from 2 to approximately 20, and X ^- is an anion derived from a mineral or organic acid.

A particularly preferred compound of formula (IX) is that for which R ₁ , R ₂ , R ₃ and R ₄ represent a methyl radical and n = 3, p = 6 and X = Cl, known under the name Hexadimethrine chloride according to the INCI nomenclature (CTFA).

(8) polyquaternary ammonium polymers comprising units of formula (X):

formula (X) in which:

- R ₁₈ , R ₁₉ , R ₂₀ and R ₂₁ , which may be the same or different, represent a hydrogen atom, a methyl, ethyl, propyl, β-hydroxyethyl, β-hydroxypropyl radical or a -CH ₂ CH ₂ (OCH ₂ CH ₂ ) _p OH radical, where p is equal to 0 or to an integer between 1 and 6, provided that R ₁₈ , R ₁₉ , R ₂₀ and R ₂₁ do not simultaneously represent a hydrogen atom,

- r and s, which may be the same or different, are integers between 1 and 6,

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

- X ^- denotes an anion, such as a halide, and

- A denotes a dihalide radical or preferentially represents -CH ₂ -CH ₂ -O-CH ₂ -CH ₂ -.

Examples include the products Mirapol ^® A 15, Mirapol ^® AD1, Mirapol ^® AZ1 and Mirapol ^® 175 sold by the company Miranol.

(9) quaternary polymers of vinylpyrrolidone and vinylimidazole, for example the products sold under the names Luviquat ^® FC 905, FC 550 and FC 370 by the company BASF.

(10) polyamines such as Polyquart ^® H sold by Cognis, which is referenced under the name Polyethylene Glycol (15) Tallow Polyamine in the CTFA dictionary.

(11) polymers including in their structure:

(a) one or more patterns corresponding to formula (A) below:

(b) optionally one or more patterns corresponding to formula (B) below:

In other words, these polymers can be chosen in particular from homopolymers or copolymers including one or more units derived from vinylamine and optionally one or more units derived from vinylformamide.

Preferably, these cationic polymers are chosen from polymers including, in their structure, from 5 mol% to 100 mol% of units corresponding to formula (A) and from 0 to 95 mol% of units corresponding to formula (B), preferentially from 10 mol% to 100 mol% of units corresponding to formula (A) and from 0 to 90 mol% of units corresponding to formula (B).

These polymers can be obtained, for example, by partial hydrolysis of polyvinylformamide. This hydrolysis can take place in an acidic or basic medium.

The weight average molecular mass of said polymer, measured by light scattering, can range from 1,000 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.

The cationic charge density of these polymers can range from 2 meq/g to 20 meq/g, preferably from 2.5 to 15 meq/g and more particularly from 3.5 to 10 meq/g.

Polymers including units of formula (A) and optionally units of formula (B) are notably sold under the name Lupamin by the company BASF, for example, but not limited to, the products sold under the names Lupamin 9095, Lupamin 5095, Lupamin 1095, Lupamin 9030 (or Luviquat 9030) and Lupamin 9010.

Preferably, the additional cationic polymer(s) is (are) chosen from alkyldiallylamine or dialkyldiallylammonium cyclopolymers (family (6)) and their mixtures, more preferably from copolymers of diallyldimethylammonium salts (for example chloride) and acrylamide, and their mixtures.

The total content of the additional cationic polymer(s), when present in the composition according to the invention, is preferably greater than or equal to 0.05% by weight, more preferably ranges from 0.05% to 5% by weight, better still from 0.07 to 2% by weight, or even from 0.08% to 1.5% by weight, relative to the total weight of the composition.

Additives

The composition according to the present invention may further comprise one or more additive(s) other than the compounds of the invention.

As additives that may be used in accordance with the invention, mention may be made of nonionic and cationic surfactants, amphoteric, anionic or nonionic polymers, anti-dandruff agents, anti-seborrheic agents, agents for preventing hair loss and/or for promoting hair regrowth, vitamins and provitamins including tocopherol, sunscreens, mineral or organic pigments, sequestrants, plasticizers, solubilizers, mineral or organic thickeners, in particular polymeric ones, opacifiers or pearlescent agents, antioxidants, hydroxy acids, perfumes and preservatives.

It goes without saying that the person skilled in the art will take care to select this or these optional additional compounds in such a way that the advantageous properties intrinsically associated with the composition according to the invention are not, or not significantly, negatively affected by the addition(s) envisaged.

The above additives may generally be present in an amount, for each of them, of between 0.001% and 20% by weight, relative to the total weight of the composition.

The composition according to the invention is a cosmetic composition, preferably a hair care composition such as a hair composition for washing and/or conditioning the hair.

Another subject of the present invention relates to a cosmetic process for cleaning and/or conditioning fibers, in particular human keratinous fibers such as hair, which consists in applying to said keratinous fibers a composition as defined above, and after an optional application time, in optionally removing it by rinsing.

After an optional exposure time, the composition can preferably be removed by rinsing with water. The fibers can then be dried or left to dry.

In general, the application time of the composition on the keratinous fibers can range from 10 seconds to 5 minutes.

The composition can be applied to wet or dry keratinous fibers, preferably to wet keratinous fibers.

In the present invention, the term "keratinous fibers" refers to human keratinous fibers, and in particular human hair.

Finally, the present invention relates to the use of a composition as described above for washing and/or conditioning keratin fibers, preferably hair.

The following example serves to illustrate the invention without, however, having a limiting character.

Examples

In the examples which follow and unless otherwise indicated, the quantities are indicated as mass percentages of active ingredient (ai) relative to the total weight of the composition.

The following compositions A1 and A2 according to the invention and comparative composition B were prepared from the ingredients indicated in the table below (weight % of active material).

Composition A1 (invention) Composition A2 (invention) Composition B (comparative) C14-16 Sodium Olefin Sulfonate 7.2 8 7.2 Cocamidopropyl betaine 1.7 1.7 1.7 Sodium lauroyl sarcosinate 1 1 1 Glycerin 2 2 2 Dimethicone (and) Amodimethicone (and) Trideceth-10 (and) PEG-100 Stearate (and) Steareth-6 (and) Trideceth-3 2 % emulsion (i.e. 0.8 % MA dimethicone + 0.2 % MA of amodimethicone) 3 % emulsion (i.e. 1.2 % MA dimethicone + 0.3 % MA amodimethicone) - Amodimethicone - - 1 Cocamide MEA 1.8 1.8 1.8 Propylene glycol (and) PEG-55 propylene glycol oleate 1.8 1.8 1.8 Glycol distearate 1.5 1.5 1.5 Polyquaternium-7 (QP-7) 0.1 0.1 0.1 Coco-betaine 0.3 0.3 0.3 Hexylene glycol 0.5 0.5 0.5 Sodium chloride 0.8 0.4 0.8 Carbomer 0.36 0.36 0.36 Guar hydroxypropyltrimonium chloride 0.2 0.2 0.2 conservatives qs qs qs Water Qsp 100 Qsp 100 Qsp 100

The compositions according to the invention could be used as shampoos; they give an abundant foam, which could be rinsed easily; on wet hair, detangling is good and the hair is smooth to the touch, with a feeling of coating and suppleness.

Once dry, hair has good volume and a coated feel; detangling, smoothness and shine parameters are good.

Silicone and PQ-7 deposits of compositions A1 and B above were evaluated on strands of natural Indian hair.

The evaluation was carried out with the Thermofisher Optim'x XRF system (wavelength dispersion) WDXRF. The principle is based on the radiation emission characteristics of the chemical element, produced by the impact of high-energy photons distributed by an X-ray tube.

Operating parameters:

- Flowing gas Helium – Argon/Methane (90/10)

- X-ray tube (Rh), PET Crystal and FPC detector

- Voltage 25 kV-2 mA

- 3 measures/strand = 60 s/measure

- Minimum sample size 250 mg (2 mm pieces)

Protocol: 0.4 g of composition was applied to 1 g of hair strand. The shampoo was massaged 6 times with the fingers from root to tip to generate foam. The strand was then rinsed under running water (25 °C) for 10 seconds. The strand was then dried at 45 °C in an oven.

Silicone deposits of compositions A1 and B on keratin fibers were measured after 5 applications.

The results obtained are detailed in the table below.

Average silicone and PQ-7 deposit (ppm) Silicones PQ7 Total deposit (Si + PQ7) Composition A1 (invention) 436 ± 16.17 192 ± 7.02 628 Composition B (comparative) 257 ± 7.77 182 ± 10.26 439

Composition A1 according to the invention (i.e. comprising a silicone emulsion) has a higher silicone deposit and a higher PQ7 deposit than comparative composition B (comprising only amodimethicone).

Claims (10)

Cosmetic composition comprising:
(a) an oil-in-water emulsion having a particle size D50 of less than 350 nm and comprising:
- a silicone mixture comprising (i) a trialkylsilyl terminated dialkylpolysiloxane having a viscosity of 40,000 to less than 100,000 mPa.s at 25°C and (ii) an amino silicone having a viscosity of 1,000 to 15,000 mPa.s at 25°C and an amine index of 2 to 10 mg KOH per gram of amino silicone,
- an emulsifier mixture comprising one or more non-ionic emulsifiers, wherein the emulsifier mixture has an HLB value of 10 to 16, and
- water;
(b) one or more cationic polysaccharides,
(c) one or more anionic α-olefin sulfonate surfactants, and
(d) one or more amphoteric or zwitterionic surfactants. Composition according to claim 1, in which the trialkylsilyl-terminated dialkylpolysiloxane (i) is of formula (IX):
R' ₃ SiO(R' ₂ SiO) _p SiR' ₃
in which
- R', identical or different, are a monovalent hydrocarbon radical comprising from 1 to 18 carbon atoms, preferably from 1 to 6 carbon atoms, and
- p is an integer from 500 to 2,000, preferably from 1,000 to 2,000;
and preferably a trimethylsilyl terminated polydimethylsiloxane. Composition according to any one of the preceding claims, in which the amino silicone (ii) is of formula (X):
XR ₂ Si(OSiAR) _n (OSiR ₂ ) _m OSiR ₂
in which:
- R, identical or different, are a monovalent hydrocarbon radical comprising from 1 to 18 carbon atoms, preferably from 1 to 6 carbon atoms,
- X, identical or different, are R or a hydroxyl (OH) or C1-C6 alkoxy group; preferably X is R,
- A is an amino radical of formula -R ¹ -[NR ² -R ³ -] _x NR ² ₂ , or the protonated amino forms of said amino radical, in which R ¹ , identical or different, are a C1-C6 alkylene radical, preferably a radical of formula -CH2CH2CH2- or -CH2CH(CH3)CH2-, R ² , identical or different, are a hydrogen atom or a C1-C4 alkyl radical, preferably a hydrogen atom, R ³ is a C1-C6 alkylene radical, preferably a radical of formula -CH2CH2-, and x is 0 or 1;
And
- m+n is an integer from 50 to about 1000, preferably from 50 to 600;
preferably A is an amino radical of formula -R ¹ -[NR ² -R ³ -] _x NR ² _6, or the protonated amino forms of said amino radical, in which R ¹ is -CH2CH2CH2- or -CH2CH(CH3)CH2-, R ² are hydrogen atoms, R ³ is -CH2CH2-, and x is 1. Composition according to any one of the preceding claims, in which said mixture of emulsifiers comprises one or more non-ionic emulsifiers chosen from:
(i) polyoxyalkylene alkyl ethers, in particular (poly)ethoxylated fatty alcohols of formula: R ₃ -(OCH2CH2) _c OH with:
- R ₃ representing a linear or branched C8-C40 alkyl or alkenyl group, preferably C8-C30 alkyl or alkenyl group, optionally substituted by one or more hydroxyl groups, and
- c being an integer between 1 and 200 inclusive, preferably between 2 and 150;
and more particularly fatty alcohols comprising from 8 to 22 carbon atoms, oxyethylated with 1 to 30 mol of ethylene oxide (1 to 30 EO);
(ii) polyoxyalkylene (C8-C32)alkylphenyl ethers;
(iii) polyoxyalkylenated sorbitan fatty acid esters (C8-C32), in particular polyethoxylated sorbitan fatty acid esters preferably containing from 2 to 40 ethylene oxide units, preferably from 2 to 20 ethylene oxide units; preferably polyoxyethylated (C10-C24) fatty acid esters preferably containing from 2 to 40 ethylene oxide units, preferably from 2 to 20 ethylene oxide units; and
(iv) polyoxyethylated fatty acid esters (C8-C32) containing for example from 2 to 150 mol of ethylene oxide; preferably polyoxyethylated fatty acid esters (C10-C24) containing for example from 2 to 150 mol of ethylene oxide. Composition according to any one of the preceding claims, in which the cationic polysaccharide(s) b) is (are) chosen from cationic celluloses, cationic galactomannan gums and mixtures thereof; preferably from cellulose ether derivatives comprising quaternary ammonium groups, guar gums comprising cationic trialkylammonium groups and mixtures thereof; preferably from cationic galactomannan gums, preferably from guar gums comprising cationic trialkyl groups and mixtures thereof; better still the cationic polysaccharide is guar hydroxypropyl ammonium chloride. Composition according to any one of the preceding claims, in which one or more anionic surfactants of α-olefin sulfonate c) are chosen from C ₆ -C ₂₄ and in particular C ₁₂ -C ₂₀ α-olefin sulfonates, as well as their salts and their mixtures. Composition according to any one of the preceding claims, in which the amphoteric or zwitterionic surfactants d) is (are) chosen from (C ₈ -C ₂₀ )alkylbetaines, such as cocoyl betaine (C ₈ -C ₂₀ )alkylamido(C ₃ -C ₈ )alkylbetaines, such as cocamidopropylbetaine, (C ₈ -C ₂₀ )alkylamphoacetates, (C ₈ -C ₂₀ )alkylamphodiacetates and mixtures thereof; and preferably (C ₈ -C ₂₀ )alkylbetaines, (C ₈ -C ₂₀ )alkylamido(C ₃ -C ₈ )alkylbetaines and mixtures thereof; preferentially among ( _C8 - _C20 )alkylamido( _C3 - _C8 )alkylbetaines and their mixtures. Composition according to any one of the preceding claims, wherein said composition is free of sulfate, in particular free of sulfate anionic surfactants. A process for treating keratin fibres, preferably for cleaning the keratin fibres, comprising applying to the keratin fibres a composition according to any one of the preceding claims. Use of the composition according to any one of claims 1 to 9 for washing and/or conditioning keratin fibers, preferably hair.