Puritan's Pride, Collagen Peptides Powder Type I & III, 7 OzProduct Description Collagen peptides powder type I and III is an easy to mix powder. Collagen is a protein that is found everywhere in from skin to joints and organs. If you want to look and feel good inside and out hydrolyzed collagen may help achieve just that. Did you know that skin collagen may decrease with collagen provides healthy support for skin and supports body collagen as well. Product Benefits Dietary Supplement. Supports Healthy Skin.