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1. WO2012061025 - METHOD FOR IMPROVING COLOR RETENTION IN ARTIFICIALLY COLORED HAIR

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[ EN ]

Claims:

1. A method for improving color retention in artificially -colored hair comprising applying to hair that has been artificially colored a composition comprising:

(a) a hydrophobic particulate material having a median particle size between about 10 nm and about 20 flm, said hydrophobic particulate material comprising from about 0.1% to about 2.0% by weight of said composition;

(b) a silicone-based hydrophobic film former comprising from about 0.5% to about 20% by weight of said composition; and

(c) a cosmetically acceptable vehicle comprising a volatile hydrocarbon or silicone fluid having a vapor pressure above about 0.01 mmHg at 20°C;

wherein the aggregate weight percentage of all non- volatile water-soluble or water-dispersible organic constituents in said composition is less than 5%, based on the entire weight of the composition.

2. The method according to claim 1, wherein said hydrophobic particulate material comprises a hydrophobically surface-modified oxide selected from the group consisting of aluminum oxide, silicon dioxide, titanium dioxide, zirconium dioxide, tin dioxide, zinc oxide, iron oxide and combinations thereof.

3. The method according to claim 2, wherein said oxide is surface modified with alkylsilane groups.

4. The method according to claims 3, wherein said alkylsilane is caprylylsilane, and wherein said oxide is selected from the group consisting of alumina, silica, and a mixture thereof.

5. The method according to claim 4, wherein said alumina is fumed alumina and wherein said silica is fumed silica.

6. The method according to claim 1, wherein said silicone-based hydrophobic film former comprises dimethicone, amodimethicone, dimethiconol, silicone polyurethane, silicone acrylate, or a combination thereof.

7. The method according to claim 6, wherein said silicone-based hydrophobic film former comprises a poly(alkyl)acrylate backbone and a dimethicone polymer grafted to an alkyl ester side chain.

8. The method according to claim 1, wherein said composition is in the form of a liquid or emulsion.

9. The method according to claim 1, wherein the loss of color from said hair is reduced or prevented following at least two shampooings as compared to otherwise identical hair that has not been treated.

10. The method according to claim 1, wherein said artificially colored hair has been dyed with a direct dye or an oxidative dye.

11. The method according to claim 10, wherein the dye is an oxidative dye that imparts a red hue to said hair.

12. The method according to claim 1, wherein the vehicle comprises said volatile silicone fluid, which is selected from the group comprising cyclomethicone tetramer, cyclomethicone pentamer, cyclomethicone hexamer, trisiloxane, methyl trimethicone, or combinations thereof.

13. The method according to claim 1, wherein the vehicle further comprises a solvent comprising ethyl alcohol or water.

14. The method according to claim 1, wherein the composition is in the form of a water-in-silicone emulsion.

15. The method according to claim 1, wherein the composition further comprising an emulsifier comprising an organosiloxane polymer having side chains comprising -(EO)m-and/or - (PO)n- groups, where the sum of n and m is about 50 or less, the side chains being terminated with hydrogen or C1-8 alkyl groups.

16. The method according to claim 15, wherein said emulsifier comprises an emulsifier selected from the group consisting of peg 10 dimethicone, peg/ppg-18/18 dimethicone, peg/ppg-19/19 dimethicone, and cetyl peg/ppg-10/1 dimethicone.

17. The method according to claim 1, further comprising a water soluble quaternium or polyquaternium film former.

18. The method according to claim 17, wherein the water soluble film former is polyquaternium-37 (INCI).

19. The method according to claim 1, where said silicone film former comprises a silicone gum.

20. The method according to claim 1, where said composition is anhydrous.

21. The method according to claim 1, where said composition is applied to color-treated hair after every shampoo for at least one week and is applied to wet hair.

22. The method according to claim 1, where said composition is applied to color-treated hair after every shampoo for at least one week and is applied to dry hair.

23. A composition adapted to improve color retention in artificially-colored hair comprising:

(a) a hydrophobic particulate material having a median particle size between about 10 nm and about 20 fim, said hydrophobic particulate material comprising from about 0.1% to about 2.0% by weight of said composition;

(b) a silicone-based hydrophobic film former comprising from about 0.5% to about 20% by weight of said composition; and

(c) a cosmetically acceptable vehicle comprising a volatile hydrocarbon or silicone fluid having a vapor pressure above about 0.01 mmHg at 20°C;

wherein the aggregate weight percentage of all non- volatile water-soluble or water-dispersible organic constituents in said composition is less than 5%, based on the entire weight of the composition.