Type 2 collagen is the main type of collagen found in cartilage, especially in joints. It’s made of flexible, loosely packed fibers that help cushion joints, absorb shock, and keep cartilage smooth for movement. Your body naturally produces it, but production drops with age. Common use: Taken as a supplement, often in hydrolyzed or undenatured form, to support joint health, reduce stiffness, and ease symptoms of osteoarthritis. It’s different from Type 1 collagen, which is used more for skin, hair, and bones.Type 2 collagen is the main type of collagen found in the cartilage, especially in the joints.