Cosmetic composition for coating keratin fibres
The present invention relates to a composition, preferably a cosmetic composition, in particular for coating keratin fibres such as the eyelashes, comprising: —an aqueous phase, —a lamellar phase Lβ formed by an aqueous phase-structuring surfactant system, said surfactant system comprising a content of surfactant(s) of greater than or equal to 15% by weight relative to the total weight of the composition, —at least one (poly)oxyalkylenated hydrophilic polymer present in a content of greater than or equal to 3% by weight of solids relative to the total weight of the composition, the hydrophilic polymer(s) having a weight-average molecular mass Mw ranging from 1500 to 500 000 g/mol. The present invention also relates to a process for coating keratin fibres.
1. A composition, comprising:
an aqueous phase representing from 30% to 80% by weight, relative to the total weight of the composition,
a lamellar phase Lβ formed by an aqueous phase-structuring surfactant system, said surfactant system comprising a content of surfactant(s) of greater than or equal to 15% by weight relative to the total weight of the composition, wherein the surfactant system comprises:
at least one nonionic surfactant with an HLB value at 25° C. of less than 8 selected from the group consisting of steareth-2, glyceryl stearate and a mixture thereof, and
steareth-20,
wherein the nonionic surfactant with an HLB value at 25° C. of less than 8 and the steareth-20 are present in a total content of greater than or equal to 15% relative to the total weight of the composition, and
at least one (poly)oxyalkylenated hydrophilic polymer present in a content of greater than or equal to 1% by weight of solids relative to the total weight of the composition selected from the group consisting of polyethylene glycol homopolymer, (poly)propylene glycol/(poly) ethylene glycol copolymer, diblock or triblock copolymer of (poly)ethylene glycol and of (poly)propylene glycol, and a mixture thereof,
wherein the composition is free of anionic surfactants.
2. The composition of claim 1 , wherein the steareth-20 is present in an amount of at least 7% by weight relative to the total weight of the composition.
3. The composition of claim 1 , wherein the nonionic surfactant(s) of formula (I) with an HLB value at 25° C. of less than 8 are present in a content of greater than or equal to 8% by weight relative to the total weight of the composition.
4. The composition of claim 1 , wherein the nonionic surfactant(s) with an HLB value at 25° C. of less than 8 and the steareth-20 are present in a total content ranging from 15% to 45% by weight relative to the total weight of the composition.
5. The composition of claim 1 , wherein the nonionic surfactant(s) with an HLB value at 25° C. of less than 8 and the steareth-20 are present in a respective total content such that the weight ratio of the nonionic surfactant(s) with an HLB value at 25° C. of less than 8 to the steareth-20 ranges from 1/5 to 5.
6. The composition of claim 1 , further comprising from 0 to 25% by weight of at least one wax relative to the total weight of the composition.
7. The composition of claim 1 , comprising less than 5% by weight of wax and at least 3% by weight of the (poly)oxyalkylenated hydrophilic polymer(s) relative to the total weight of the composition.
8. The composition of claim 1 , further comprising at least 10% by weight of at least one wax.
9. The composition of claim 1 , further comprising at least one dyestuff comprising one or more pulverulent substance.
10. The composition of claim 1 , wherein the composition has a value L* of less than 10 as determined using a spectroradiometer at 0° and the composition has a viscosity at 25° C. ranging from 5 to 50 Pa·s.
11. A process for coating keratin fibres, the process comprising applying the composition of claim 1 to keratin fibres.