1, sodium hyaluronate is hyaluronic acid, its main function is moisturizing, and it belongs to a moisturizing factor with the strongest moisturizing ability at present. Secondly, sodium hyaluronate can repair skin damage, promote the proliferation and differentiation of epidermal cells, scavenge oxygen free radicals, delay skin aging and remove wrinkles, so now sodium hyaluronate is widely used in skin care products and medical beauty and plastic surgery.

2. Sodium hyaluronate used in clinic is divided into macromolecules, middle molecules and small molecules, and its functions are different according to different molecular weights. Sodium hyaluronate has crosslinking effect, which is mainly used to support filling, such as filling nasolabial groove, filling lacrimal groove, micro-plastic nose and so on. Small molecular sodium hyaluronate is often used for hydrating, anti-wrinkle, anti-aging, improving skin quality and improving skin luster. For example, the most important component of sodium hyaluronate is the water needle used in clinic.