Cellex-C Patented Formulations contain L-ascorbic acid, zinc and tyrosine. L-ascorbic acid is the only form of vitamin C that the body utilizes to promote collagen synthesis. Cellex-C Core Formulations are designed to help your skin look, act and feel like younger skin. After eight to twelve weeks of topical application, your skin will begin to feel firm, smooth and toned with deep wrinkles looking less pronounced. With regular use, Cellex-C will improve the overall texture, color and look of your skin and help reduce the visible signs of aging.