Skin care compositions

Abstract

Anhydrous sunscreen compositions that include a volatile solvent, an organic UV-filter dissolved in the volatile solvent, a water-insoluble, low-volatility, C 2 -C 8 , liquid silicone dissolved in the volatile solvent, a branched fatty acid ester of a polyprotic carboxylic acid dissolved in the volatile solvent, and a film-forming polymer, where the branched fatty acid ester of a polyprotic carboxylic acid and the water-insoluble, low-volatility, C 2 -C 8 , liquid silicone are present in a ratio from about 3:1 to 4.25:1.

1 . A composition comprising:
 a volatile solvent;   an organic UV-filter dissolved in the volatile solvent;   a water-insoluble, low-volatility, C 2 -C 8 , liquid silicone dissolved in the volatile solvent;   a branched fatty acid ester of a polyprotic carboxylic acid selected from the group consisting of citric acid, ascorbic acid, phosphoric acid and sulfuric acid, dissolved in the volatile solvent; and   a film-forming polymer, wherein the branched fatty acid ester of a polyprotic carboxylic acid and the water-insoluble, low-volatility, C 2 -C 8 , liquid silicone are present in a ratio from about 3.5:1 to 4:1, wherein the composition is anhydrous.   
     
     
         2 . The composition of  claim 1 , wherein the branched fatty acid ester of a polyprotic carboxylic acid is an octyldodecyl citrate polyester. 
     
     
         3 . The composition of  claim 1 , wherein the water-insoluble, low-volatility, C 2 -C 8 , liquid silicone includes a unit of —[CH 3 —SiO—C n H 2n —CH 3 ]—, where n is from 2 to 8. 
     
     
         4 . The composition of  claim 3 , wherein the water-insoluble, low-volatility, C 2 -C 8 , liquid silicone is ethyl methicone. 
     
     
         5 . The composition of  claim 1 , wherein the organic UV-filter is selected from the group consisting of octocrylene, a benzotriazole, anisotriazine, an ester of salicylic acid, an ester of cinnamic acid and a derivative of a benzoylmethane. 
     
     
         6 . The composition of  claim 1 , further comprising an aerosol propellant. 
     
     
         7 . The composition of  claim 6 , wherein the aerosol propellant is dimethyl ether. 
     
     
         8 . The composition of  claim 1 , further comprising a wax. 
     
     
         9 . The composition of  claim 1 , further comprising from 0.1 to about 5 percent of lotus wax.