What it is
Polymethylsilsesquioxane/trimethylsiloxysilicate combines a methyl silicone resin powder with trimethylsiloxysilicate, a film-forming silicone resin. Together they help deposit a smooth, even, long-wearing film while contributing a silky slip and soft-focus feel. The blend is often used to improve wear and the sensory finish of sunscreens, color cosmetics, and concealers.
Safety & warnings
Silicone resins of this type are inert and generally well tolerated on the skin, with low irritation and low comedogenic potential.
Origin & sourcing
A synthetic combination of silicone resins, polymethylsilsesquioxane and trimethylsiloxysilicate.
Questions everyone asks
What does the trimethylsiloxysilicate part contribute?
It is a film-forming silicone resin that helps the product lay down an even, long-wearing layer.
Where is this blend commonly used?
In sunscreens, concealers, and color cosmetics where smooth wear and a soft finish are desired.