What it is
This is silica whose surface has been treated with silicone groups to make it hydrophobic. It thickens and structures oil and silicone phases, controls flow, absorbs excess oil, and contributes a smooth, dry, soft-focus feel.
Safety & warnings
An inert, surface-treated mineral powder generally regarded as non-irritating.
Origin & sourcing
Synthetic silica with a silicone surface treatment.
Questions everyone asks
What does silica dimethyl silylate do?
It thickens oil phases, absorbs excess oil, and gives a dry, smooth finish.
How is it different from regular silica?
Its surface is treated to be water-repellent, so it works well in oil and silicone systems.