Derma roller set 4 in 1: Derma roller set works to reduce the skin and acne scars in addition to exposure to sunlight. This set gives you healthy looking skin with a natural glow. In addition to the sterile titanium needles, it consists of 3 heads your skin needs: 1.5 mm head suitable for the body: distinctive from 1200 type: in reducing the signs of sagging, stretching of the skin and scars. 1.0 mm Face Fit Tip: Premium 720p: Helps reduce signs of aging. The tip is suitable for sensitive areas of the face, such as the lips and eyelids. It contains 300 needles of 0.5 mm.