Silica microspheres is a microsphere (super tiny ball) format. Silica is a naturally occurring mineral found in everything from granite to sand. Additionally, it has a high rate of oil absorption capacity, making them ideal for inclusion in under-makeup primers and mineral makeups. They can be used for sebum control or loaded with oil-soluble actives for release on the skin with application. Particle size (2-15 microns). We would suggest experimenting with Silica at 1% - 10% by weight of the formula for a powdered product. Stir into powdered cosmetics after you are done using your coffee grinder; grinding silica microspheres compromises their teensy sphere-ness. Silica microspheres can also be stirred into hot or cold liquid cosmetics that won’t be ground. Recommended Use Rate: 2 - 10%Appearance: White free flowing powder INCI: HDI/Trimethylol Hexyllactone Crosspolymer (and) Silica Country of Origin: USA Download SDS Download COA by Lot # : 050264-17450