This dermaroller utilizes 540 short, fine needles to gently puncture the skin, promoting the production of collagen and elastin. Simply roll the device over the desired treatment area 1-3 times a week with a 0.5 mm frequency, or once every 2 weeks with a 1.0 mm frequency, to address concerns like acne, scars, blemishes, and wrinkles. Rolling Frequency 0.5 mm 1 - 3 times a week 1.0 mm every 2 weeks