Nature's Moisturizer. Cellular Hydration & Lubrication for Skin Joint & Eyes. Non-GMO and Gluten Free. Hyaluronic Acid (HA) is an important disaccharide found in every tissue of the body as an essential lubricant of healthy joints skin and eyes and promotes cell turnover. HA is one of nature's most water loving molecules responsible for the control of tissue hydration and water transport between cells.