C E Ferulic with 15% l-ascorbic acidC E Ferulic vitamin C serum features a synergistic combination of 15% pure vitamin C (L ascorbic acid), 1% vitamin E (alpha tocopherol), and 0. 5% ferulic acid to enhance protection against environmental aggressors causing dry skin that can contribute to visible signs of aging. This vitamin C serum improves signs of aging, the appearance of fine lines & wrinkles, and the loss of firmness, while brightening skins complexion.