This Derma Roller Face is a precision instrument that is designed safely for home use. This prickly wonder tool uses long, 0.5mm long stainless steel needles to gently micro-exfoliate and create smoother, plumper, and firmer skin. Gently roll the microneedles over your skin and cover any desired areas. Use once a month or every seven days ONLY if your skin can tolerate a weekly treatment. Allows better penetration of your favorite beauty products. Stimulates your skin to produce more collagen - the key to radiant skin. Reduces the appearance of scars, fine lines, and wrinkles. Reduces age spots and stretch marks