The Pritty Derma Roller is a microneedling device with 0.5mm stainless steel needles designed for at-home skincare treatments. This handheld tool helps improve product absorption and stimulate collagen production through controlled micro-injuries to the skin's surface. As this is a personal hygiene/cosmetic product that creates micro-punctures in the skin, it should be properly sanitized before and after each use. The 0.5mm needle length is considered suitable for at-home use but should be used with caution. Users should follow proper derma rolling techniques and spacing between treatments to allow skin healing. Consult with a skincare professional before beginning microneedling treatments, especially if you have sensitive skin or skin conditions.