Sunscreen emulsion comprising silane-treated oxide
Compositions including an aqueous phase emulsified within an external fatty phase comprising at least one silicone are provided. The compositions include iron oxide having a silane-treated surface, zinc-oxide having a silane-treated surface, a titanium dioxide-silica composite particulate, and hollow spheres of acrylic polymer.
1. A composition, comprising:
an aqueous phase emulsified within an external fatty phase comprising at least one silicone;
an iron oxide particulate having a silane-treated surface;
a zinc-oxide particulate having a silane-treated surface;
a titanium dioxide particulate having a hydrophobic surface;
a titanium dioxide-silica composite particulate; and
hollow spheres of acrylic polymer.
2. The composition of claim 1 , wherein the concentration by weight of titanium dioxide particulate is greater than about 10%.
3. The composition of claim 1 , wherein the concentration by weight of titanium dioxide particulate is from about 13% to about 20%.
4. The composition of claim 1 , wherein the concentration by weight of zinc oxide particulate is from about 7% to about 10%.
5. The composition of claim 1 , wherein the titanium dioxide-silica composite particulate is titanium dioxide coated with silica.
6. The composition of claim 1 , further comprising a dispersant.
7. The composition of claim 1 , further comprising polyhydroxystearate.
8. The composition of claim 1 , wherein the concentration of water is from about 10% to about 40%.
9. The composition of claim 1 , wherein the external fatty phase is characterized by a majority fraction of silicone fatty materials and a minority fraction of non-silicone fatty materials.
10. The composition of claim, wherein the concentration of the at least one silicone is from about 10% to about 40%.
11. The composition of claim 1 , wherein the at least one silicone comprises phenyl trimethicone.
12. The composition of claim 1 , wherein the iron oxide having a silane-treated surface is present in a concentration of at least about 1% by weight.
13. The composition of claim 1 , wherein the composition is substantially free of organic sunscreens.
14. The composition of claim 1 , wherein the iron oxide particulate having a silane-treated surface, the zinc-oxide particulate having a silane-treated surface, the titanium dioxide particulate having a hydrophobic surface, the titanium dioxide-silica composite particulate, and the hollow spheres of acrylic polymer are present in a combined concentration of less than about 40% by weight.
15. A method of making up the skin comprising applying the composition of claim 1 to said skin.