Further Food Collagen Peptides contain Type 1 and 3 Collagen, two of the most common collagen types found in the body. Type 1 and 3 both support skin, hair, nails, bones joints, and digestion. Recent advanced third-party testing has revealed that our Marine Collagen contains Type 2 collagen, which helps support joints, in addition to type 1 and 3 collagen!