The Pritty Derma Roller features 1.5mm stainless steel micro-needles designed for professional skincare treatments. This microneedling tool helps improve product absorption and stimulate collagen production through controlled micro-injuries to the skin surface. Due to the longer 1.5mm needle length, this derma roller is recommended for professional use only and should not be used for at-home treatments. Professional supervision is required as this needle length can penetrate deeper into the skin compared to shorter needle variants. The device should be properly sanitized before and after each use following medical sterilization protocols.