When considering which collagen to choose, the type matters. We use marine collagen peptides derived from fish sourced through sustainable fishing, certified FRIEND OF THE SEA®. It is primarily type 1 collagen (the most abundant type found in the skin), but also type 3 (beneficial for supportive tissues). Fish origins in our collagen food supplement: pangasius, tilapia, catfish, cod, haddock, Nile perch, cobia.