The Colgate 360 charcoal toothbrush features charcoal infused tapered bristles, designed to clean 2 times deeper along the gum line (versus an ordinary flat-trim toothbrush). The thinner bristles of the toothbrush make it easier to clean hard to reach areas and in-between teeth. The Colgate 360 charcoal toothbrush cleans your teeth, tongue, cheeks, and gums using the cleaner on the back of the toothbrush. Remember to change your toothbrush every 3 months.