Hyaluronic acid and its derivatives offer superior moisturization as the skin-identical molecules are capable of penetrating deep into the dermis and absorbing 1000 times their weight in water.  The lower the molecular weight, the deeper the molecule can penetrate the skin. Sodium Hyaluronate is the salt form of hyaluronic acid that exists as a smaller molecular size than hyaluronic acid, is more water-soluble, and is less likely to oxidize. It provides more significant moisturization as the molecule is capable of penetrating deeper into the dermis.  It is ideal for use in skincare due to its biocompatibility, consistency, and hydrophilicity (water-loving nature).