Anti-acne composition

Abstract

The present invention relates to a composition for treating acne comprising an anti-microbial peptide made from the amino acids phenylalanine, alanine, leucine and lysine with said peptide admixed with salicylic acid and/or salicylate salts in a cosmetic delivery vehicle containing a rehydrating polymer. The invention further relates to a method for treating acne by topically administering one of the compositions in an amount therapeutically effective to reduce the redness and blemishes associated with acne.

Description

Claims

1. A composition for the topical treatment of acne comprising: 0.001% to about 0.1% by weight percent of a synthetic vegetable-derived anti-microbial short chain peptide of 10-20 amino acid units of primarily phenylalanine, alanine, leucine and lysine,0.5% to about 2% by weight of salicylic acid and alkali metal salts thereof;97.9% to about 99.4% by weight aqueous delivery vehicle containing 0.01% to about 2% by weight of a non-comedogenic, hydrated film-forming copolymer formed from the solution polymerization of dimethylacrylamide, acrylic acid, polystyrene, and methacrylate monomers.

2. The composition of claim 1 where the peptide is 15 amino acid units of phenylalanine, alanine, leucine and lysine with the sequence FAKALKALLKALKAL-NH2.

3. The composition of claim 1 where the delivery vehicle contains 10% to about 20% C1-C3 alkyl alcohols.

4. The composition of claim 1 with 0.5% to 1% by weight salicylic acid and alkali metal salts thereof.

5. The composition of claim 1 where the peptide weight percent is 0.005%>to about 0.2%.

6. The composition of claim 1 wherein the aqueous delivery system contains 0.1 to about 40% by weight of natural products originating from rice-bran extract, manuka honey melaluca oil/extract or boswellia extract.

7. The composition of claim 1 in which the aqueous delivery vehicle forms an emulsion with an oil, and in, which either water or oil is the continuous phase, wherein the aqueous component contains 0.0104 to about 2% by weight of the non-comedogenic, hydrated film-forming copolymer formed from the solution polymerization of dimethylacrylamide, acrylic acid, polystyrene, and methacrylate monomers.

8. The composition of claim 7 where the oil phase contains 1% to 78% by weight of an oil-absorbing silicone-elastomer crosspolymer gel.

9. The composition of claim 7 where the oil phase contains 0.01 to about 0.5% by weight of an ester of retinoic acid.

10. The composition of claim 8 where the silicone-elastomer crosspolymer gel contains polysilicone-11.

11. (canceled)

12. The composition of claim 9 where the ester of retinoic acid is all-trans retinoic 1-hydroxy-3,3-dimethyl-2-butanone ester.

13. The composition of claim 3 wherein the film-forming polymer is a hydrated dimethylacrylamide/acrylic acid/polystyrene/methacrylate copolymer mixed with Oryza sativa bran extract with a non-volatiles content of about 13.0 to about 17.0% by weight.

14. The composition of claim 7 wherein the film-forming polymer is a hydrated dimethylacrylamide/acrylic acid/polystyrene/methacrylate copolymer mixed with Oryza sativa bran extract with a non-volatiles content of about 13.0 to about 17.0% by weight.

15. A method of applying to the skin of a patient suffering from acne, the composition for the topical treatment of acne defined in claim 1 which comprises the step of topically administering to the skin of said patient a therapeutically effective amount of said composition.

16. The method of claim 15, wherein the composition for the treatment of acne comprises the peptide that is Compound A, namely, FAFALKALLKALKAL-NH2.

17. The method of claim 15, wherein the delivery vehicle in the composition for the topical treatment of acne contains 1% to about 20% C2-C3 alkyl alcohols.

18. The method of claim 15, wherein the composition for the topical treatment of acne contains 0.5% to 1% by weight salicylic acid or an alkali metal salt thereof.

19. The method of claim 18, wherein the peptide in the composition for the topical treatment of acne is present in an amount of 0.005% to about 0.2% weight-percent.

20. The method of claim 15, wherein the aqueous delivery vehicle in the composition for the topical treatment of acne contains 0.1 to about 40% by weight of natural products originating from rice-bran extract, manuka honey, melaluca oil/extract or boswellia extract.

21. The method of claim 15 wherein the film-forming polymer in the composition for the topical treatment of acne is a hydrated dimethylacrylamide/acrylic acid/polystyrene/methacrylate copolymer mixed with Oryza sativa bran extract with a non-volatiles content of about 13.0 to about 17.0% by weight.

22. A method of applying to the skin of a patient suffering from acne, the composition for the topical treatment of acne defined in claim 7 which comprises the step of topically administering to the skin of said patient a therapeutically effective amount of said composition.

23. The method of claim 22, wherein the oil phase contains 1% to 78% by weight of an oil-absorbing silicone-elastomer crosspolymer gel.

24. The method of claim 23, wherein the oil phase contains 0.01 to about 0.5% by weight of an ester of retinoic acid.

25. The method of claim 23, wherein the silicone-elastomer crosspolymer gel contains polysilicone-11.

26. (canceled)

27. The method of claim 24, wherein the ester of retinoic acid is all-trans retinoic 1-hydroxy-3,3-dimethyl-2-butanone ester.

28. The method of claim 22 wherein the film-forming polymer in the composition for the topical treatment of acne is a hydrated dimethylacrylamide/acrylic acid/polystyrene/methacrylate copolymer mixed with Oryza sativa bran extract with a non-volatiles content of about 13.0 to about 17.0% by weight.

29. The method of claim 15, wherein the composition for the topical treatment of ache is presented in a patch, gel stick, spray, aerosol, wipe or swab.

30. The method of claim 22, wherein the composition for the topical treatment of acne is presented in a patch, gel stick, spray, aerosol, wipe or swab.