Skin Ceuticals C E Ferulic High Potency Triple Antioxidant Treatment features a synergistic antioxidant combination of 15% pure vitamin C (L-ascorbic acid), 1% vitamin E (alpha tocopherol), and 0.5% ferulic acid to enhance protection against environmental damage caused by free radicals that can contribute to atmospheric aging. It is now proven to reduce combined oxidative damage generated by UVA/UVB rays, ozone pollution, and diesel engine exhaust by up to 41%. In addition to antioxidant protective benefits, C E Ferulic improves signs of aging and photodamage, the appearance of lines and wrinkles, and the loss of firmness, while brightening skin's complexion. Comes in 30 ml size.