Up to 90% of the collagen in our bodies consists of Type I as in our Pure Marine Collagen Powder. It provides structure to skin, bones, tendons, fibrous cartilage, connective tissue, and teeth. Collagen's amino acids can play a crucial role in our digestive system. Also find Type I Collagen in our keto collagen unflavoured and chocolate-flavoured powder, Bovine Collagen and Beef Bone Broth. Look for Type III in our keto collagen unflavoured powder, Bovine Collagen and Beef Bone Broth.