What Is Dermapen Micro-Needling? Dermapen micro-needling is a skin rejuvenation treatment that uses a handheld device fitted with a cluster of ultra-fine, sterile needles. The device creates thousands of microscopic punctures in the top layer of the skin at a controlled depth and speed. These tiny channels trigger your body's own healing response, encouraging it to produce fresh collagen and elastin, the two proteins responsible for firm, smooth, youthful-looking skin. Unlike