Skinceuticals C E Ferulic is a revolutionary antioxidant combination that delivers advanced protection against photoaging - neutralizing free radicals, helping build collagen, and providing unmatched antioxidant protection. More protection means more youthful looking skin and better defense against environmental aging. Containing 15% pure L-ascorbic acid and 1% alpha tocopherol, the addition of ferulic acid doubles the already synergistic benefits of our original high-potency formula, C+E, transforming C E Ferulic® into a super-antioxidant combination. Questions? Leave a comment below!