The Derma Roller features 540 stainless steel micro-needles (0.25mm) mounted on an elegant gold-plated handle. This professional-grade microneedling tool is designed for at-home skincare treatments to improve product absorption and stimulate collagen production. As this is a personal care/hygiene product used for skin treatments, please consult with a skincare professional before use. The 0.25mm needle length is considered gentle enough for beginners and regular maintenance treatments. Always sanitize the roller before and after each use and follow proper derma rolling techniques and safety protocols.