You will enjoy one session of derma roller on 10x10 inch area or full face the skin needling roller stimulates your bodys own production of collagen making it an ideal anti ageing anti scar anti cellulite and anti stretchmark treatment during the treatment the skin needling roller a small handheld device consisting of close to 200 micro needles is gently rolled over the face or body in order to create multiple tiny punctures in the layers of the skin simply put these 3