Pro-Collagen Banking Serum is a breakthrough in the preservation and protection of skin’s collagen. Unlike competitors, Dermalogica’s Pro-Collagen Banking Serum does not contain collagen; topically applied collagen is unable to penetrate the skin directly due to its size, preventing it from passing through the epidermis. Instead, it is enriched with peptides in a potent complex of Collagen Amino Acids, Jojoba Ester, Polyglutamic Acid, and more designed to promote, protect, nourish, and preserve the existing collagen in our skin. The Potent Pro-Collagen Preservation Complex is specifically formulated to defend the skin against collagen-degrading free radicals. Featuring a gel-to-serum consistency, this product easily glides across skin .