Olympian Labs Hyaluronic Acid also contains BioCell Collagen which is a smaller molecule than most collagens, which is key for quick absorption to where it's most needed as we age – including joints, skin, tendons, and ligaments. Hyaluronic Acid is a carbohydrate found in all bones and cartilage structures throughout the body which provide a resilient rigidity to the structure of the human body. With age, the ability of the skin to produce Hyaluronic Acid decreases. Hyaluronic Acid binds water and lubricates movable parts of the body, such as joints and muscles. Hyaluronic Acid regenerates and supports the interior structure of the skin from inside the body.