Ultimate HA Formula (Hyaluronic Acid) is a breakthrough healthy aging formula used to support joint health, skin health and more. Purity's Ultimate HA contains 100 mg of Hyaluronic Acid (HA) per serving, in a high performance 10% extract... made from patented BioCell Collagen II and blended with chondroitin sulfate.* Hyaluronic Acid is a key component of collagen which makes up the material between cells and provides structure to various organs like the eyes, joints and skin.