SkinCeuticals Serum 10 Dual Antioxidant Face Serum contains 10% Vitamin C and 0.2% ferulic acid that provides antioxidant and anti-aging benefits to the skin. It neutralizes damaging free radicals caused by oxidative stress which causes skin aging. Formulated with 10% pure Vitamin C (l-ascorbic acid) which help neutralize damaging free radicals that contribute to atmospheric skin aging, environmental damage and premature signs of aging caused by free radicals from UVA/UVB radiation. Vitamin C is known for helping even out skin tone by fading sunspots and other dark spots on the skin. It improves the appearance of wrinkles, dark spots, and acne. SkinCeuticals Serum 10 Dual Antioxidant Face serum improves the appearance of fine and coarse wrinkles of the face and neck, as well as improved overall skin texture and appearance. 0.2% Ferulic features a synergistic antioxidant combination of 10% pure vitamin C (L-ascorbic acid) lauded for its superior antioxidant benefits. This highly potent form of pure vitamin C helps neutralize free radicals and protect against oxidative stress while providing visible anti-aging benefits. SkinCeuticals Serum 10 Dual Antioxidant Face Serum does not contain Paraben, fragrance, alcohol or dye. It is ideal as an introductory antioxidant serum for all skin types, including sensitive.