SkinCeuticals' Silymarin CF is a powerful vitamin C triple antioxidant serum formulated specifically for oily and blemish-prone skin. SkinCeuticals research shows that specific combinations of antioxidants, when effectively formulated, perform synergistically to provide results superior to every single antioxidant formulation. The result of six years of research and development, this lightweight formula helps reduce oil oxidation, control excess sebum and improve the appearance of blemishes and signs of ageing. Silymarin CF contains 0.5% Silymarin, optimised concentration of milk thistle plant.