Sodium Hyaluronate (SH) is the sodium salt form of hyaluronic acid, a straight-chain macromolecular mucopolysaccharide composed of repeating disaccharide units of glucuronic acid and N-acetylglucosamine. It is highly water-soluble and widely distributed in the extracellular matrix of human and animal tissues, including skin, joints synovial fluid, vitreous humor, umbilical cord, and cockscomb. Sodium Hyaluronate is known for its excellent moisturizing, lubricating, and tissue-repairing properties, making it a key ingredient in pharmaceuticals, cosmetics, and nutritional supplements.