CeraVe Hydrating Hyaluronic Acid Serum, formulated with hyaluronic acid, helps bind moisture to your skin’s surface, smoothing it and providing up to 24 hours of hydration. With three essential ceramides to restore and maintain your skin's natural protective barrier, as well as vitamin B5 to soothe your dry skin, CeraVe Hydrating Hyaluronic Acid Serum provides your skin with much-needed moisture and more.