vitamin C serum for oily and acne-prone skin that features 0.5 % silymarin (milk thistle extract), 15 % l-ascorbic acid, 0.5 % ferulic acid and 0.5 % salicylic acid. Provides the skin with superior antioxidant benefits as well as reduce sebum production, refine skin texture, and improve skin clarity and fine lines. a description for this product here...