This moisture cream delivers and binds humectants within the epidermis. The purest and most potent form of hyaluronic acid – L-Sodium Hyaluronate and Cassia Betaglycan (plant hyaluronic) increases moisture by 300%. Ultra Replenish Cream is especially beneficial for dry skin as a day and night moisture cream. Hyaluronic Acid is said to be the principal water-regulating molecule and can bind up to 6,000 times its weight in water.