When considering which collagen to choose, the type matters. We primarily use type 1 collagen, extracted from fish sourced from sustainable fisheries certified by FRIEND OF THE SEA®. This type of collagen is the most suitable for supporting the structure of the skin, hair and body tissues. Our fish come from the species Pangasius, Tilapia, Catfish, Cod, Haddock, Nile Perch and Cobia.