What It Is: A hydrating serum that plumps skin to improve elasticity and the appearance of dehydrated skin. What It Does: Clinically demonstrated* to penetrate up to 10 surface layers deep, this hydrating serum delivers a "filling effect" that helps visibly improve skin elasticity and smooth the appearance of fine lines. Infused with Epidermal Hydration filler and 15% Glycerin, Hydro-Plumping Serum Concentrate revives and visibly improves the appearance of dehydrated skin. Benefits: Helps visibly plump skin to smooth the appearance of fine lines and uneven skin texture Formulated with Epidermal Hydration filler to encourage skin's natural production of Hyaluronic Acid and improve the appearance of dull skin This hydrating serum visibly improves the appearance of dehydrated skin brought on by a decline in skin's natural Hyaluronic Acid levels while helping improve skin elasticity Ophthalmologist- and dermatologist-tested For all skin types Key Ingredients: Glycerin - Glycerin, a well-known skincare ingredient, is highly compatible and naturally occurring within skin. Within our formulas, it is a powerful humectant known to attract and lock in moisture to the upper surface layer of the skin to help maintain a "filling effect" and visibly smooth dry, fine lines. Epidermal Hydration Filler - Kiehl's formula with Epidermal Hydration Filler encourages skin's natural Hyaluronic Acid production to help improve elasticity and visibly reduce signs of age-related dehydration. How to Use: Dispense one pump of hydrating serum into hand Apply evenly to clean skin before your moisturizer in the morning and at night May also be used on the eye contour In case of contact with eyes, rinse immediately with water Ingredients: Aqua / Water, Glycerin, Dimethicone, Propanediol, Gluconolactone, Dimethicone/Peg-10/15 Crosspolymer, Polymethylsilsesquioxane, Sodium Chloride, Sodium Dextran Sulfate, Sodium Hydroxide, Phenoxyethanol, Citric Acid, Chlorphenesin, Sodium Citrate, P-Anisic Acid, Disodium Edta, Peg-10 Dimethicone, Adenosine, Dipropylene Glycol, Tocopherol *Results based on formula penetration data in a clinical test on 25 subjects.