Natural creation of collagen is the main reason why younger people have supple skin and shiny, thicker hair. Collagen exists in our skin, hair, and nails. As we get older, the amount of synthetic Collagen goes down. This is the start of sagging skin. Our hair also loses its shine and thickness. At this time, men and women sometimes start taking Collagen supplements or drinking Collagen drinks. Not only do these help with hair and skin, but they also relieve joint troubles. Collagen injections can also be used to smooth out wrinkles. Supplements and drinks last longer though because they effect the body from the inside rather than from the surface.