Derma Roller for Face and Body - Angel Kiss 4 in 1 Titanium Microneedling Roller Kit Micro Needle Microneedle Roller, 300 and 720 Needles 0.25mm,1200 Needle 0.3mm Please note that Sanitize the roller head in an alcohol solution for 5-10 minutes before and after each use, Dry it off then place it back into the case. Don\'t Soaked in alcohol too long..