As well as Hyaluronic Acid each tablet provides Chondroitin Sulphate, Vitamin C and Collagen (BioCell Collagen ll). - Hylauronic Acid is located in the skin tissues. The ability to produce Hyaluronic Acid declines with age. The Vitamin C in the product contributes to the protection of cells from oxidative stress (damage). As well as Hyaluronic Acid each tablet provides Chondroitin Sulphate, Vitamin C and Collagen (BioCell Collagen ll). - Hylauronic Acid is located in the skin tissues. The ability to produce Hyaluronic Acid declines with age. The Vitamin C in the product contributes to the protection of cells from oxidative stress (damage).