Designed for use with a drill for rotation, the Roto Brush trains and stimulates hair growth when used as part of a daily care routine Pulls up, separates and defines leg hair as the first step in the fitting process Fluffer option features long ball-tipped bristles that stimulate the undercoat while short fiber bristles help fluff the longer top hairs for greater pop and bloom Copper option comes with natural antimicrobial properties, and offers superior exfoliation to the hide to efficiently remove dead hair, dandruff and dirt