The Collagen Plus Vitamin Patch has three types of collagen to support joint, skin, hair, and nail health. Collagen Types I and III are present in bones, nail beds, and hair. Collagen Type II is the major protein in your knees and other joints, helping to provide cushioning support to prevent pain with movement and pressure. The Collagen Plus Vitamin Patch also has components that are used to make collagen in the body. Glucosamine, chondroitin, and hyaluronic acid are all needed for healthy collagen production and function. Vitamin C is needed for your body to produce collagen and cartilage. PatchAid vitamin patches are Latex, Lactose, Gluten, and Sugar-free. Please Note: Nutritional patches are a new technology. As with any nutritional supplements, consumers should use nutrition patches according to their healthcare providers’ recommendations and regularly monitor nutrient levels through lab work as they would when taking any dietary supplements.