Daily Dose Of Water™ Hyaluronic Acid Hydrating Serum is a moisture-binding lightweight serum for exceptional hydration in dehydrated, dull skin. This fast-absorbing formula instantly boosts moisture levels in the skin using Hyaluronic Acid, which can hold up to many times its weight in water. By binding moisture to your skin, your complexion feels soft, supple and appears younger and more radiant.