In War on Wrinkles, Collagen Is Key — But What Is Collagen, Exactly? (And How Can You Get More of It) star-telegram.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from star-telegram.com Daily Mail and Mail on Sunday newspapers.
Collagen is a popular protein supplement used for anti-aging and other benefits, but there’s debate over the sources of this protein and whether marine collagen is best.