Premium grade MULTI Collagen Types I, II, III, V, X derived from not only one source, but FOUR different sources –sustainably sourced pasture-raised & grass-fed bovine, wild-caught Alaskan fish, chicken bone broth and eggshell membrane from cage-free chickens. Because our formula contains five different types of collagen from such high-grade sources, the results are more comprehensive and ANTI-AGING benefits are not just apparent in the skin, but are also noticed in the hair, nails, joints, and muscles. Scientific evidence also shows that collagen provides other health benefits - bone density, blood vessels, cardiovascular health, gut lining, wound healing, and generalized wellbeing - these may not be externally visible however are vitally important!