Product name:Dimethicone

CAS: 9016-00-6

Molecular formula: C5H6Si

Molecular weight:94.18664

Description:Dimethicone is what the chemists like to call a silicon-based polymer—”polymer” meaning it’s a large molecule made up of several smaller units bonded together. Simply put, it’s a silicon oil, man-made in the laboratory and used in personal care products as an anti-foaming agent, skin protectant, and skin and hair conditioner.

Manufacturers like it because it makes products easily spreadable, so you get that feeling of the lotion or cream gliding over your skin. Dimethicone also helps form a protective barrier on the skin, and can fill in the fine lines and wrinkles on the face, which is why it’s often used in makeup primers.