Curaprox ( has developed the BLACK Is WHITE Hydrosonic toothbrush that incorporates carbon brush heads and includes a two-minute timer and two-week battery life. It is capable of up to 84,000 brush movements per minute with three intensity levels. The unique water drop-shaped brush head design is excellent at cleaning each individual tooth. In addition, the company’s proprietary CURACURVE ergonomics allows it to easily clean some of the hard-to-reach areas in the mouth. The set comes with two brush heads, and the rubberized back of the brush heads help to prevent unpleasant vibrations of an electric toothbrush.