Divo Asanti Mixed Bristle with Thermal Core Brush is ideal for effectively straightening frizzy hair, or adding curls, or bounce, to the hair. The bristles of the brush are a combination of natural and nylon. The natural bristles evenly distribute the hairs' natural oil, while the nylon bristles deeply penetrate the hair for better tension and control. The thermal core conducts the heat of the hair-dryer evenly, for a more polished blow-dry