Give your skin the weapons it needs to fight the effects of aging. Cosmedica Skincareu2019s 2.5% Retinol Facial Serum uses a formula of pure retinol and hyaluronic acid thatu2019s backed by science to promote collagen production for a tighter, brighter, more youthful complexion. With Vitamin E added to hydrate and even out skin tone, this anti-aging face serum is your first-line of defense against fine lines and discoloration. See below to view additional details, how to apply, and the full ingredient list.