The Oral-B Charcoal Whitening Therapy toothbrush features charcoal infused bristles! It whitens teeth by removing surface stains. PowerTip bristles help clean in hard to reach places while CrossAction bristles lift away and sweep away plaque. This soft toothbrush is gentle on enamel and gum and cleans along the gumline. It's clinically proven to reduce gingivitis based on a 3-month study. Replace your brush every three months. Trust the brand more dentists use themselves worldwide, Oral-B.