Skin care compositions
View Patent ↗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 selected from the group consisting of ethyl methicone and caprylyl methicone 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, 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 3:1 to 4.25:1, wherein the composition is substantially free of water.
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 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 3.5:1 to 4:1.
4. 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.
5. The composition of claim 1 , further comprising an aerosol propellant.
6. The composition of claim 5 , wherein the aerosol propellant is dimethyl ether.
7. The composition of claim 1 , further comprising a wax.
8. The composition of claim 1 , further comprising from 0.1 to about 5 percent of lotus wax.
9. The composition of claim 1 comprising from about 10% to about 60% by weight of said volatile solvent.
10. The composition of claim 9 comprising less than 0.1 percent of water.
11. The composition of claim 4 comprising less than 0.1 percent of water and from about 10 percent to about 60 percent of said volatile solvent, wherein said volatile solvent is selected from the group consisting of ethanol, propanol and isopropanol.
12. A composition comprising:
from 10 percent to 60 percent of a volatile solvent selected from the group consisting of ethanol, propanol and isopropanol;
an organic UV-filter dissolved in the volatile solvent;
a water-insoluble, low-volatility, C 2 -C 8 , liquid silicone selected from the group consisting of ethyl methicone and caprylyl methicone 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, 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 3:1 to 4.25:1,
wherein the composition comprises less than one percent of water.
13. The composition of claim 12 further comprising an aerosol propellant.
14. The composition of claim 12 , further comprising a wax.
15. The composition of claim 13 , wherein the aerosol propellant is dimethyl ether.
16. The composition of claim 1 , further comprising from 0.1 to about 5 percent of lotus wax.
17. The composition of claim 12 , 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.