Derma roller the way it works what the roller aims to do is to encourage your skin to start producing a vital substance that is lacking in scarred or wrinkled skin collagen collagen is a material that is responsible for keeping skin young and fresh and is actually used in a variety of other different cosmetic treatments to similar ends you may notice redness on the skin for a few days but this will subside leaving no permanant marks by using the skin rolling technique to create tiny per