SkinBiotix MD Reviews In addition to its products natural ingredients and effective formula, Pureauty Naturals also offers a generous satisfaction guarantee. This nifty little device does an incredible job of removing all sorts of blemishes, including freckles, warts, age spots, tattoos, birthmarks, and of course, skin tags. It uses electric ion carbonation technology to remove dark spots without burning, scarring, or bleeding. It works most effectively on skin tags that measure between 2 and 4 millimeters. The rubber bands wont be able to wrap tightly enough around smaller skin tags.