Sodium hyaluronate is a skin replenishing ingredient. Derived from Hyaluronic acid, it is a water-soluble salt which attracts moisture, making it incredibly hydrating. This refined form of Hyaluronic Acid it is able to absorb more effectively and penetrate deeper into the skin, due to its lower molecular size. One gram can hold up to 6 liters of water giving it an incredible ability to retain moisture.