A volume-boosting round brush  Exclusive HeatFlex™ bristles bend & flex to effortlessly detangle & remove knots with less pain & breakage  Ultra-soft nylon bristles smooth the cuticle & enhance shine without pulling or snagging  Unique concave bristle design gets closer to the root & maximizes control for more body & volume  Uses proprietary VitaBoost Complex of biotin & keratin to strengthen hair & reduce frizz  Ceramic barrel emits negative ions for shiny, frizz-free styles  Ergonomic, rubberized EasyGrip™ gives more comfort & control, even when hands are wet 