What It Is: A concentrated 1.5% Hyaluronic Acid serum for dry skin made with only 7 ingredients that helps replenish and retain moisture for healthy-looking skin. Free of fragrance and colorants, this concentrated serum is minimally formulated for skin absorption and hydration. Features and Benefits: Formulated to help visibly replenish and hydrate dry skin Minimally formulated for skin absorption and efficacy Improves skin plumpness Reduces the appearance of dry fine lines Ideal for Dry Skin, suitable for all skin types, including sensitive Free of fragrance and colorants Key Ingredient: Hyaluronic Acid helps skin better retain moisture to improve the look of resiliency and make skin feel more supple and bouncy by delivering skin-strengthening hydration. How to Use: Apply 2–3 drops to clean, dry skin in the morning and evening Try out Kiehl's Hyaluronic Acid serum skin hacks below: Add a drop of Kiehl's Hyaluronic Acid Serum to your liquid makeup (foundation or highlighter) to add a boost of hydration/sheer out the coverage to a tint. Layer Kiehl's Hyaluronic Acid Serum underneath your favorite eye cream for an extra hydration boost. Use Kiehl's Hyaluronic Acid Serum as a highlighter by dabbing extra over your moisturizer on the "C" between the top of your brow arch, temple, and cheek bone. Zone treat your face by applying Hyaluronic Acid Serum all over to hydrate skin. Follow with your favorite moisturizer where needed. Layer with Kiehl's Niacinamide Serum to reduce oil & sooth skin. Layer with Kiehl's Glycolic Acid Serum to gently exfoliate & improve texture. Ingredients: Aqua/Water, Glycerin, Sodium Hyaluronate, Phenoxyethanol, Chlorphenesin, Tetrasodium Glutamate Diacetate, Citric Acid