The Max Pro Ceramic Round Hair Dryer Brush creates a sturdy compact curl with a diameter of 32mm. The bristles are made of ABS which makes the brush more heat resistant than most blow dryer brushes. During brushing, your hair is treated with tourmaline, which gives the hair shine and prevents a static build-up. Due to the pleated bristles, there is a better grip on the hair. The ends of the bristles are polished which prevents damage and has a soft effect on the scalp. The unique nanotechnology gives extra shine and eliminates 99 percent of all bacteria - nice side effect right?