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..Hyaluronic Acid works to hydrate and lock in moisture.Smoothes dryness and roughness.Gives skin a plump, radiant glow.3.4 fl oz.Most suitable for dry skin