The ORA facial microneedle derma roller system 0.50 mm with purple head & black handle is recommended for individuals with some experience with microneedle rolling treatments. The ORA derma roller is a gentle painless at-home microneedle roller that can be used on the face, body, and scalp. Microneedle therapy has been used for decades by dermatologists, estheticians, and Hollywood celebrities, and with a roller head with 540 0.50mm needles, the ORA derma roller promotes collagen and elastin production to reveal younger-looking, smoother skin. With regular use, this roller helps reduce the appearance of scars from injury or acne, fine lines, wrinkles, and stretch marks as well as smooth uneven skin texture and color, and heavy pitted skin. When used on the scalp, the roller helps stimulate and maintain hair within thinning and balding hair areas.