It's not just whitening- it's deep clean Therapy with charcoal and tea tree oil for your teeth! Crest 3D White Whitening Therapy with tea Tree oil gently whitens teeth by removing surface stains and gives you a clean, fresh feeling with its refreshing mint flavor. Also, it is a fluoride toothpaste that remineralizes weakened enamel to help strengthen teeth and fight cavities. For best results, pair with a Crest 3D White toothbrush or 3D White electric toothbrush head.