Hyaluronic acid is a naturally occurring polysaccharide produced by your body, making it a great choice for a natural facial moisturizer. Pure Hydration is a serum form of hyaluronic acid and can carry as much as 1000 times its weight in moisture to the skin and works to expand the skin cells, drawing in moisture from the air and locking it in to hydrate the skin beneath the surface. Pure Hydration Serum fills out sagging areas, reduces the appearance of wrinkles, and ultimately results in plumper, younger-looking skin. Since it has no creams or oils, it is a wonderful moisturizer for skin prone to acne.  pH 3.6