Hyaluronic Acid & Sodium Hyaluronate What is Hyaluronic Acid? Hyaluronic acid (or HA) is a naturally occurring substance within our bodies, and its primary function is to retain water within tissue cells. HA help to keep our joints lubricated, eyes moist, and skin moisturized. It’s typically found in our skin, ligaments, connective tissue, bones, lips, and […]