Hyaluronic acid is a kind of hyaluronic acid (HYALURONIC ACID, referred to as HA), also known ashyaluronic acid. Natural polysaccharide hyaluronic acid is a polymer, is a straight chain polymerpolysaccharides by -N- acetic acid, glucuronic acid glucosamine disaccharide units consisting ofmolecules of hyaluronic acid, the original colloidal forms existing in human skin dermal tissue, for the storage of water volume, increase the skin, make the skin look full, plump, flexible. But ha disappear with age, ability make the skin lose water, gradually become dull, aging, and the formation of fine wrinkles. Connective tissue and dermis hyaluronic acid to exist in the human body, is a kind oftransparent jelly like material, full of moisture absorbing -- 1 grams of hyaluronic acid can absorb the moisture content of 500C.C, equivalent to 500 times the water absorbing ability of glycerol. Powerfulmoisturizing function, let the hyaluronic acid moisturizing ingredients become popular. The water absorbing capacity of amazing, let ha become the best moisturizing products.