Chemical enhancer and method
The present invention relates to compositions containing at least one salicylic acid derivative and at least one cosmetic, dermatologic, pharmaceutical, etc. active agent, where the salicylic acid derivative increases, enhances, etc., the efficacy of the active agent, as well as to methods of making and using such compositions. The invention further relates to a method for enhancing the efficacy of active agents with these salicylic acid derivatives.
1. A composition in the form of an oil-in-water emulsion comprising water, an active agent and at least one salicylic acid derivative of formula (1) present in an amount and a form effective to enhance the efficacy of the active agent in or on the body:
wherein
R is a linear, branched or cyclic saturated aliphatic group or an aliphatic unsaturated group containing one or a number of double bonds, which may or may not be conjugated, these groups containing from 2 to 22 carbon atoms and being able to be substituted by at least one substituent selected from the group consisting of (a) halogen atoms, (b) a trifluoromethyl group, (c) hydroxyl groups in the free form or esterified by an acid having from 1 to 6 carbon atoms and (d) a carboxyl functional group which is free or esterified by a lower alcohol having from 1 to 6 carbon atoms;
R′ is a hydroxyl group or an ester functional group of formula
wherein R 1 is a linear or branched saturated or unsaturated aliphatic group having from 1 to 18 carbon atoms, and salts thereof, and wherein the active agent and the at least one salicylic acid derivative are present in the solvent, and
wherein the active agent is selected from the group consisting of keratolytic agents, benzoyl peroxide, and mixtures thereof.
2. The composition according to claim 1 , wherein the salicylic acid derivative is 5-n-octanoyl-salicylic acid.
3. The composition according to claim 1 , further comprising a dermatologically acceptable carrier.
4. A method of making the composition according to claim 1 , comprising mixing the salicylic acid derivative and the active agent.
5. The composition according to claim 1 , wherein the salicylic acid derivative is selected from the group consisting of 5-n-octanoyl-salicylic acid, 5-n-decanoyl-salicylic acid, 5-n-dodecanoyl-salicylic acid, 5-n-heptyloxy-salicylic, 5-n-heptyloxy-salicylic acid, and mixtures thereof.
6. The composition according to claim 1 , further comprising a surfactant.
7. The composition according to claim 1 , wherein the salicylic acid derivative of formula (1) is present in an amount effective to enhance the penetration of the active agent into skin, an amount effective to increase the bioavailability of the active agent, or both.
8. The composition according to claim 7 , wherein the salicylic acid derivative is 5-n-octanoyl-salicylic acid.
9. The composition according to claim 7 , further comprising a dermatologically acceptable carrier.
10. A method of making the composition according to claim 7 , comprising mixing the salicylic acid derivative and the active agent.
11. The composition according to claim 7 , wherein the salicylic acid derivative is selected from the group consisting of 5-n-octanoyl-salicylic acid, 5-n-decanoyl-salicylic acid, 5-n-dodecanoyl-salicylic acid, 5-n-heptyloxy-salicylic, 5-n-heptyloxy-salicylic acid, and mixtures thereof.
12. The composition according to claim 7 , further comprising a surfactant.
13. The composition according to claim 1 , wherein the salicylic acid derivative is present in an amount ranging from 0.01% to less than 2% by weight with respect to the total weight of the composition.
14. The composition according to claim 1 , wherein the salicylic acid derivative is present in an amount ranging from 0.01% to less than about 1% by weight with respect to the total weight of the composition.
15. The composition according to claim 7 , wherein the salicylic acid derivative is present in an amount ranging from 0.01% to less than 2% by weight with respect to the total weight of the composition.
16. The composition according to claim 7 , wherein the salicylic acid derivative is present in an amount ranging from 0.01% to less than about 1% by weight with respect to the total weight of the composition.
17. The composition according to claim 1 , wherein the composition comprises benzoyl peroxide as the active agent.
18. The composition according to claim 1 , wherein the composition comprises at least one keratolytic agent as the active agent.
19. The composition according to claim 7 , wherein the composition comprises benzoyl peroxide as the active agent.
20. The composition according to claim 7 , wherein the composition comprises at least one keratolytic agent as the active agent.
21. The composition according to claim 1 wherein the composition further comprises a silicone oil, a silicone elastomer, or mixtures thereof.
22. The composition according to claim 7 , wherein the composition further comprises a silicone oil, a silicone elastomer, or mixtures thereof.
23. The composition according to claim 18 , wherein the keratolytic active agent is selected from the group consisting of glycolic acid, lactic acid, salicylic acid, and mixtures thereof.
24. The composition according to claim 20 , wherein the keratolytic active agent is selected from the group consisting of glycolic acid, lactic acid, salicylic acid, and mixtures thereof.
25. The composition according to claim 18 , wherein the active agent is present in an amount ranging from 1% to 20% by weight with respect to the total weight of the composition.
26. The composition according to claim 18 , wherein the active agent is present in an amount ranging from 2% to 10% by weight with respect to the total weight of the composition.
27. The composition according to claim 20 , wherein the active agent is present in an amount ranging from 1% to 20% by weight with respect to the total weight of the composition.
28. The composition according to claim 20 , wherein the active agent is present in an amount ranging from 2% to 10% by weight with respect to the total weight of the composition.
29. The composition according to claim 18 , wherein the keratolytic active agent is selected from the group consisting of glycolic acid, lactic acid, salicylic acid, citric acid, and mixtures thereof.
30. The composition according to claim 21 , comprising a component selected from the group consisting of dimethicone, dimethicone/vinyl dimethicone crosspolymer, and mixtures thereof.
31. The composition according to claim 20 , wherein the keratolytic active agent is selected from the group consisting of glycolic acid, lactic acid, salicylic acid, citric acid, and mixtures thereof.
32. The composition according to claim 21 , comprising a component selected from the group consisting of dimethicone, dimethicone/vinyl dimethicone crosspolymer, and mixtures thereof.