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Chemical name of hyaluronic acid for cosmetics.

Hyaluronic acid (HA) or uronic acid, whose basic structure is a large polysaccharide composed of two disaccharide units, D- glucuronic acid and N- acetylglucosamine. Unlike other mucopolysaccharides, it does not contain sulfur. Hyaluronic acid molecules can carry more than 500 times of water, which is recognized as the best moisturizing ingredient today and widely used in skin care products and cosmetics.