SkinCeuticals C E Ferulic Serum is an antioxidant daytime serum for normal to dry and sensitive skin, with signs of aging, discoloration and dehydration. This patented daytime vitamin C serum delivers advanced environmental protection and improves the appearance of fine lines and wrinkles, loss of firmness, and brightens skin's complexion. Now clinically proven to reduce combined oxidative damage from free radicals generated by UV, Ozone, and Diesel Exhaust by up to 41%. C E Ferulic features a synergistic antioxidant combination of 15% 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. 1% vitamin E (alpha tocopherol) pure form of vitamin E neutralizes free radicals and replenishes skin lipids. It has been proven to act synergistically with vitamin C, and 0.5% ferulic acid to enhance protection against environmental damage caused by free radicals that can contribute to atmospheric aging. It is tested suitable for use post-laser, always consult with a physician for individual post-procedure care.