The Ag Pharm Derma Roller System features 540 micro-needles at 0.25mm length for at-home microneedling treatments. This handheld device is designed to create microscopic channels in the skin to enhance product absorption and stimulate natural collagen production. Since this is a personal care/hygiene device that penetrates the skin, proper sterilization before and after each use is essential. The 0.25mm needle length is considered gentle enough for beginners and suitable for regular maintenance treatments. The system includes the derma roller tool with an ergonomic handle design for comfortable use. As with any microneedling device, users should follow proper sanitization protocols and usage guidelines.