Demake-up micellar milk

Abstract

This invention relates to a composition, preferably a demake-up cosmetic composition, comprising: an oily phase dispersed in an aqueous phase, at least one homopolymer of non-superabsorbent acrylic acid that is at least partially neutralized, at least one cross-linked copolymer of (meth)acrylic acid and of C1-C6 alkyl acrylate, at least one polysaccharide gelling agent comprising at least one glucose monomer, and said composition having a pH greater than or equal to 5.5. It also relates to the use of such a composition for the demake-up of keratin materials.

Claims

1. A composition comprising: an oily phase dispersed in an aqueous phase, at least one homopolymer of non-superabsorbent acrylic acid that is at least partially neutralized, at least one cross-linked copolymer of (meth)acrylic acid and of C1-C6 alkyl acrylate, at least one polysaccharide gelling agent comprising at least one glucose monomer, and said composition having a pH greater than or equal to 5.5 and less than 7, and which has a viscosity less than 250 Cps.

2. The composition according to claim 1, wherein the oily phase of the composition represents a percentage ranging from 0.1% to 10% with respect to the total weight of the composition.

3. The composition according to claim 1, wherein the at least partially neutralized non-superabsorbent acrylic acid homopolymer is chosen from among sodium polyacrylates and potassium polyacrylates.

4. The composition according to claim 1, wherein the homopolymer of non-superabsorbent acrylic acid is present in a content of active material ranging from 0.01% to 6% by weight with respect to the total weight of the composition.

5. The composition according to claim 1, wherein the cross-linked copolymer of (meth)acrylic acid and of C1-C6 alkyl acrylate comprises a monomer of C1-C6 alkyl acrylate chosen from methyl acrylate, ethyl acrylate, n-butyl acrylate, 2-hydroxyethyl acrylate, styrene, acrylamide, N,N-dimethylacrylamide, tertio-butylacrylamide, methyl methacrylate, ethyl methacrylate, n-butyl methacrylate and 2-hydroxyethyl methacrylate.

6. The composition according to claim 1, wherein the cross-linked copolymer of (meth)acrylic acid and of C1-C6 alkyl acrylate is chosen from a cross-linked copolymer of methacrylic acid and C1-C6 alkyl acrylate, a cross-linked copolymer of acrylic acid and C1-C6 alkyl acrylate.

7. The composition according to claim 1, wherein the cross-linked copolymer of (meth)acrylic acid and C1-C6 alkyl acrylate is present in a concentration of active material ranging from 0.01% to 0.6% by weight, preferably from 0.1% to 0.5% by weight, and more particularly from 0.2% to 0.4% by weight with respect to the total weight of the composition.

8. The composition according to claim 1, wherein the polysaccharide gelling agent comprising at least one glucose monomer is chosen from homo- and heteropolysaccharides comprising at least one glucose monomer.

9. The composition according to claim 1, wherein the polysaccharide gelling agent comprising at least one glucose monomer is present in a content of active material ranging from 0.01% to 0.5% by weight with respect to the total weight of the composition.

10. The composition according to claim 1, which has a pH greater than or equal to 5.9.

11. The composition according to claim 1, wherein the aqueous phase comprises water and optionally an organic solvent soluble in water, chosen from among linear or branched alkanols with 2 to 4 carbon atoms; polyols with 2 to 20 carbon atoms, and mixtures thereof.

12. The composition according to claim 1, which comprises from 50 to 98% by weight of water relative to the total weight of the composition, and/or which comprises 0.01 to 15% by weight of organic solvent(s) relative to the total weight of the composition.

13. A kit comprising: on the one hand a composition of coating keratin materials, and on the other hand a composition according to claim 1.

14. The composition according to claim 3, wherein the oily phase of the composition represents a percentage ranging from 0.1% to 10%.

15. The composition according to claim 4, wherein the at least partially neutralized non-superabsorbent acrylic acid homopolymer is chosen from among sodium polyacrylates and potassium polyacrylates.

16. The composition according to claim 2, wherein the at least partially neutralized non-superabsorbent acrylic acid homopolymer is chosen from among sodium polyacrylates and potassium polyacrylates.

17. The composition according to claim 2, wherein the homopolymer of non-superabsorbent acrylic acid is present in a content of active material ranging from 0.01% to 0.6% by weight.

18. The composition according to claim 1, which has a pH between 6.0 and 6.5.

Description

EXAMPLE 1

Micellar Milk According to the Invention

(1) TABLE-US-00001 Ingredient Quantity (% w/w) Preservatives Qs Glycols 7 Betaine (trimethylglycine) 1 (GENENCARE OSMS BA, DANISCO) Sodium polyacrylate 0.3 (Cosmedia SP)** Xanthan gum 0.09 Monolaurate of sorbitan oxyethylene (20 2 OE) (polysorbate-20) (TWEEN 20-LQ-(CQ), CRODA) Isopropyl myristate 1.5 Perfume Qs Cross-linked methacrylic acid/ethyl acrylate 1 copolymer (CARBOPOL AQUA SF-1 from NOVEON)* Plant extract 0.1 Citric acid Qs pH Water Qsp100 *or 0.3% by weight of active material **or 0.27% by weight of active material

(2) The micellar milk is prepared as follows:

(3) A portion of the water is mixed with the glycols, the betaine and the preservatives, at a temperature of about 68° C.

(4) Then, to the preceding mixture is added sodium polyacrylate and xanthan gum before the temperature of the composition reaches 60° C. This is homogenized.

(5) Afterwards, stopping the heating, the polysorbate-20 is added and this is homogenized. Then the isopropyl myristate and the perfume (fatty phase) are added, then this is homogenized at ambient temperature.

(6) Afterwards, the adding of the cross-linked methacrylic acid/ethyl acrylate copolymer has to be done at a pH in the vicinity of 6.0. The whole is homogenized by adding the remaining water.

(7) Finally, at ambient temperature, the plant extract is added then the citric acid in order to obtain a final pH of 6.2.

(8) In the end, a smooth and shiny white homogeneous fluid is obtained.

EXAMPLE 2

Comparison of the Formula According to Example 1 with a Comparative Formula Comprising a Carrageenan

(9) The formula of the aforementioned example 1 is evaluated for its stability in centrifugation at 2200 rpm, for 1 hour or 10 days at 55° C., or 2 months at 45° C., or 36 months at ambient temperature.

(10) It is stable in all of these conditions.

(11) It is compared with the following comparative formula. This comparative formula does not contain any polysaccharide gelling agent comprising at least one glucose monomer:

(12) TABLE-US-00002 Ingredient Quantity (% w/w) Glycols 7 Preservatives Qs Betaine (trimethylglycine) 1 (GENENCARE OSMS BA, DANISCO) Provitamin B5 0.01 Sodium polyacrylate 0.3 (Cosmedia SP)** Carrageenan gum 0.16 Monolaurate of sorbitan oxyethylene (20 1 OE) (polysorbate-20) (TWEEN 20-LQ-(CQ), CRODA) DISODIUM COCOYL GLUTAMATE (and) 1 SODIUM COCOYL GLUTAMATE (AMISOFT CS 22/AJINOMOTO) Isopropyl myristate 1.5 Cross-linked methacrylic acid/ethyl acrylate 1.2 copolymer (CARBOPOL AQUA SF-1 from NOVEON)* Citric acid Qs Water Qsp100 *or 0.36% by weight of active material **or 0.27% by weight of active material

(13) These tests show that only the formula of the example 1 according to the invention is stable.

EXAMPLE 3

Comparison of the Formula According to Example 1 with Comparative Formulae

(14) The formula of the aforementioned example 1 is evaluated for its stability in centrifugation after 24 h at ambient temperature. It is stable in this condition, and its viscosity (measured as described above) is less than 250 Cps.

(15) Formula of example 1 is compared with the same formula, but which does not comprise any cross-linked methacrylic acid/ethyl acrylate copolymer (CARBOPOL AQUA SF-1 from NOVEON). Thus, the 1% of this commercial ingredient (corresponding to 0.3% by weight of active material) are replaced by water, to give comparative formula FC1. The same process for making the formula as in example 1 is used. FC1 shows a viscosity of less than 250 Cps, but after centrifugation, FC1 is totally unstable, as a complete separation of the phases is observed.

(16) Formula of example 1 is also compared with the same formula, but in which the 1% of CARBOPOL AQUA SF-1 corresponding to 0.3% by weight of active material, are replaced by 0.3% of Pemulen TR-1 Polymer from Lubrizol (Acrylates/C10-30 Alkyl Acrylate Crosspolymer; 100% by weight of active material), to give comparative formula FC2. The same process for making the formula as in example 1 is used.

(17) FC2 is stable, but shows a viscosity of around 2100 Cps.

(18) Thus, these tests show that only the formula of the invention is fluid and stable.