Methods and compositions for preventing or reducing frizzy appearance of hair
View Patent ↗Compositions and methods are disclosed for preventing or reducing frizzy appearance of keratin fibers, including hair, and reducing the amount of fly-away strands of hair, particularly in humid conditions, by forming a coating on hair that is resistant to water vapors from the air or surrounding environment. The compositions comprise a combination of a hydrophobic particulate material comprising a hydrophobically surface-modified aluminum oxide and one or more hydrophobic film formers in a cosmetically acceptable vehicle.
1. A method for preventing or reducing frizzy appearance of hair comprising applying to the hair a composition comprising:
(a) a hydrophobic particulate material having a median particle size between about 10 nm and about 20 μm comprising a hydrophobically surface-modified aluminum oxide, 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 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 aluminum oxide is surface modified with alkylsilane groups.
3. The method according to claim 2 , wherein said alkylsilane is caprylylsilane.
4. The method according to claim 3 , wherein said aluminum oxide is fumed alumina.
5. The method according to claim 1 , wherein said aluminum oxide is fumed aluminum oxide that is surface modified with alkylsilane groups.
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 silicone acrylate copolymer.
8. The method according to claim 7 , wherein said silicone acrylate copolymer is a copolymer comprising a poly(alkyl)acrylate backbone and a dimethicone polymer grafted to an alkyl ester side chain.
9. The method according to claim 1 , wherein said composition is in the form of a liquid or emulsion.
10. The method according to claim 9 , wherein the composition applied to the hair further comprises ethyl alcohol.
11. The method according to claim 9 , wherein the composition applied to the hair is an emulsion further comprising water.