SkinCeuticals C E Ferulic is a high-potency combination antioxidant serum formulated to provide advanced environmental protection. This professional-grade treatment contains 15% pure vitamin C (L-ascorbic acid), 1% vitamin E (alpha tocopherol), and 0.5% ferulic acid. Designed to neutralize free radicals induced by UVA/UVB, infrared radiation, and ozone pollution, it helps improve the appearance of fine lines, wrinkles, and loss of firmness while brightening the skin's complexion. The formula remains effective for a minimum of 72 hours once absorbed, making it an essential step in a daily preventative skincare routine. Comes in original factory-sealed packaging.