Tips: We have updated the making material of the handle and roller head, to resolve the melting issues raised in buyer comments. It can be disinfected normally with alcohol. And Please read the manual included with the product before use, it can help you better microneedling at home. MULTIPURPOSE - You can apply it to all target areas. Come with manual which can help you microneedling at home easily. For beginners, the 0.25 mm micro needling roller is the best choice to learn your dermarolling. GREAT QUALITY - Made of real cone-shaped individual titanium pins with 24K gold plated, instead of metal disk, you can clearly feel the difference between them, you can see quality in construction from our product. The pins take gamma disinfection, much healthy. Do not bent and rusty. Sealed packaging. Include free storage case. WHY WE DESIGN THE 200 PINS: Compared with the regular ones, the 200pins roller can get faster and better effect. Pair with our pro post repair mask, get the best result. A TRUE GREAT VISIBLE TRANSFORMATION – The pro derma roller tool can promotes a luminous, youthful vibrant and healthy-looking complexion, give your skin a smoother look and feel. Help promote a much healthier, thicker beard and hair. Just one or two times you can witness the effect. Do not press(roll) hard. Just scroll gently when use.