What it is: A booster serum that instantly increases moisture levels by delivering a shot of concentrated ultrahydrating ingredients into skin. Who it's for: Ideal for all skin types.What it does: The serum helps combat both dryness and dehydration. Low-molecular weight hyaluronic acid works deep within the edpidermis to plump and hydrate the lower levels of the skin while urea and niacinamide lock down hydration in the upper surface layers. How to use: Shake the serum well and distribute 2-4 drops between fingertips. Gently pat the product onto clean, dry skin. Alternatively, you can mix this in wiht your moisturizer or serum.