Vanillin polymers for use in darkening the skin
View Patent ↗The present invention features polymers containing vanillin monomers and/or o-vanillin monomers and the use thereof in darkening the skin.
1. A method of darkening the skin, said method comprising applying to said skin a polymer comprising (i) monomers selected from the group consisting of vanillin monomers, o-vanillin monomers, and mixtures thereof and (ii) monomers selected from the group consisting of 3-aminotyrosine, dihydroxy acetone, aloin, emodin, alizarin, tyrosine, dihydroxyphenylalanine, 4,5-dihydroxynaphthalene-2-sulfonic acid, 3-nitrotyrosine, 3-dimethylamino phenol, p-aminobenzoic acid, and mixtures thereof.
2. A method of claim 1 , wherein said polymer comprises aloin monomers.
3. A method of claim 1 , wherein said polymer comprises dihydroxyphenylalanine monomers.
4. A method of claim 1 , wherein said polymer comprises aloin monomers and dihydroxyphenylalanine monomers.
5. A method of claim 1 , wherein said polymer further comprises a moiety selected from the group consisting of linoleic acid, 9,10-dihydroxystearic acid, linolenic acid, cholesterol, dihydroxycarbazole, and mixtures thereof.
6. A method of claim 1 , wherein said polymer has a molecular weight of from about 10 kd to about 50 kd.
7. A method of claim 2 , wherein said polymer has a molecular weight of from about 10 kd to about 50 kd.
8. A method of claim 4 , wherein said polymer has a molecular weight of from about 10 kd to about 50 kd.
9. A polymer comprising (i) monomers selected from the group consisting of vanillin monomers, o-vanillin monomers, and mixtures thereof and (ii) monomers selected from the group consisting of 3-aminotyrosine, dihydroxy acetone, aloin, emodin, alizarin, tyrosine, dihydroxyphenylalanine, 4,5-dihydroxynaphthalene-2-sulfonic acid, 3-nitrotyrosine, 3-dimethylamino phenol, p-aminobenzoic acid, and mixtures thereof.
10. A polymer of claim 9 , wherein said polymer comprises aloin monomers.
11. A polymer of claim 9 , wherein said polymer comprises dihydroxyphenylalanine monomers.
12. A polymer of claim 9 , wherein said polymer comprises aloin monomers and dihydroxyphenylalanine monomers.
13. A polymer of claim 9 , wherein said polymer further comprises a moiety selected from the group consisting of linoleic acid, 9,10-dihydroxystearic acid, linolenic acid, cholesterol, dihydroxycarbazole, and mixtures thereof.
14. A polymer of claim 9 , wherein said polymer has a molecular weight of from about 10 kd to about 50 kd.
15. A polymer of claim 10 , wherein said polymer has a molecular weight of from about 10 kd to about 50 kd.
16. A polymer of claim 12 , wherein said polymer has a molecular weight of from about 10 kd to about 50 kd.
17. A composition comprising a polymer of claim 9 and cosmetically-acceptable topical carrier.
18. A method of darkening the skin, said method comprising applying to said skin a composition of claim 17 .