There are at least 16 different types of collagen. However, there are a couple that stand out most. Types I & III are the most prevalent, with type I accounting for 90%. Type I collagen is accountable for strong hair, skin, nails and bones. Type III serves for bones integrity and for the blood circulation system vessels strength.
While type II collagen is less prevalent within the human body, they are renowned for promoting joint health. Type II collagen is sourced from animal collagen, as opposed to marine collagen sourced for type I & III.