SkinCeuticals Silymarin CFAn oil free vitamin C serum for oily skin and blemish prone skin that delivers advanced environmental protection, reduces oiliness, refines skin texture, and visibly improves skin clarity and fine lines. Silymarin CF is a breakthrough vitamin C serum for oily and blemish prone skin that combines 0. 5% silymarin (milk thistle extract), 15% l ascorbic acid, 0. 5% ferulic acid, and 0. 5% salicylic acid to help prevent oil oxidation that can lead to