SkinCeuticals® Silymarin CFSkinCeuticals Silymarin CF is an oil free Vitamin C serum formulated specifically for oily and blemish prone skin types. It delivers advanced environmental protection and reduces oiliness, refines skin texture, and visibly improves skin clarity and fine lines. "This is a game changer for anyone who suffers from cystic acne. Not only has it helped reduce the oiliness of my skin, but it has significantly improved my skin clarity." ~ Tamara