✅ DERMA 6 IN 1 ROLLER ANSWER ALL SKIN PROBLEMS INQUIRIES - Containing 4 replaceable roller heads, silicone face cleaning brush and storage case. Thin needles (0.25mm) for eyes and other small areas; needles of medium length (0.5 mm) for the face and neck; coarse needle length (1.0mm) for body, such as abdomen, legs, scalp; Local needle (1.5 mm) for topical use.✅ SAFE AND HYGIENIC SKIN PROTECTION TOOLS - The derma roller kit has passed CE, FDA, ROHS and others certifications.Made from medical grade titanium grade A needle and ABS material, the strength of titanium needles is 3-4 times that of stainless steel, and the service life is longer, safe even for sensitive skin. Use rubbing alcohol and the sterilization reservoir supplied in the sterilization kit.✅ EASY TO USE AT HOME AND ON TRAVEL - Start with a 0.25mm micro needle that works on the epidermis of the skin. It should be soft during the initial operation, and the skin should be adjusted from light to heavy, slowly increasing the number and intensity of the roll. Usage:Use once a week or every two weeks.