The Derma roller is a small and simple device, designed to roll micro-needles on the skin, in order to stimulate the formation of collagen and elastin and to accelerate cell renewalA magical beauty tool, the derma roller system 540 needles is all you need in your vanity to regenerate and rejuvenate your skin like never before! In addition to treating numerous skin issues, it triggers new collagen synthesis and hair growth in desired areas. Key Features Anti-aging System Wrinkle Removal Promote blood circulation and skin tighten Effectively improve scar, stretch marks, acne, etc. Skin Rejuvenation Stimulates hair growth, improves thinning/balding hair areas