There are 3 main types of collagen: type I, II and III.

TYPE I COLLAGEN

Type I is the most prevalent type of collagen in the body. This is the type of collagen you’re probably thinking about if you’re interested in preserving the levels of collagen in your skin, hair or nails. Because it is so prevalent in the connective tissues, we often see the decrease of type I collagen resulting in characteristics such as sagging skin, fine lines, brittle nails and thinning hair. But type I collagen isn’t just a beauty-related substance. It’s also a major component of the tendons, organs and bones. 

TYPE II COLLAGEN

Though somewhat less prevalent in the body than type I, type II collagen is extremely important. It is the main component of cartilage and is extremely healthy for the skeletal system. Active people who need to rely on their joints may also benefit from adding type II collagen into their diet. 

TYPE III COLLAGEN

The third commonly found type of collagen, Type III, is generally found in reticular fibers, such as in the bone marrow. It’s usually found alongside Type I collagen in the body.