SkinCeuticals Silymarin CF is a breakthrough antioxidant serum formulated for oily and blemish-prone skin. With 15% pure vitamin C (L-ascorbic acid), 0.5% silymarin (milk thistle extract), 0.5% ferulic acid, and 0.5% salicylic acid, it helps reduce oil oxidation, prevent breakouts, and protect against free radical damage. This lightweight serum brightens skin, improves clarity, and reduces visible signs of aging.