COSRX's Hyaluronic Acid Hydra Power Essence immediately moisturizes dry and depleted skin types. A natural moisturizing ingredient, Sodium Hyaluronate is a form of Hyaluronic Acid that draws water into the skin for ultimate results. The Details Hyaluronic Acid works to hydrate and lock in moisture Smoothes dryness and roughness Gives skin a plump, radiant glow