In cosmetics, it has many uses:
It is an oil absorbent It improves "slip" (how the product feels going on) Because of their spherical shape our silica also scatter light and blur the look of fine lines and wrinkles.
Median particle size is 5 microns. It is an amorphous hydrated silica.
We would suggest experimenting with Silica at 1% - 15% by weight of the formula for a powdered product.
If you haven't tried working with silica in your formulary yet, we encourage you to sample some. It really improves the performance and feel of the product and it is a very natural addition to the ingredients list.