Amika Polished Perfection Straightening Brush Black What it is: Fusing the power of a straightener with the ease of a hairbrush, Polished Perfection Straightening Brush instantly creates smooth hair in a single stroke.What it does: Effortlessly achieve sleek style with the brush's double ion generator, which delivers millions of negative ions for shiny, smooth results.What else you need to know: Double Negative Ion Technology - the maximum in negative ions resulting in shiny, smooth, frizz-free results with zero static. Ceramic Bristles with Nylon Cool-Tips - emit far-infrared heat that instantly penetrates the cortex of the hair cuticle, heating from the inside out. The hair is heated evenly and in half the time of conventional heat, reducing the risk of damage. LCD Digital Interface - precise setting and monitoring of temperature up to 450ºF (232ºC), the most important element for getting consistent and effective results. The auto-shutoff feature means no power will be wasted when not in use. Temperature Lock - for uniform temperature control. Ready And Able - an easy grip, 9 foot 360 swivel cord made of heat-proof, up to 450ºF (232ºC), fabric and a professional hook makes use and storage simple.