It’s not just whitening – it’s deep cleaning therapy with charcoal for your teeth! Crest 3D White Whitening Therapy Deep Clean Black & White Stripe. Charcoal toothpaste gently whitens teeth by removing surface stains and leaves them feeling clean and fresh with its invigorating mint flavor. Plus, it’s a fluoride toothpaste that remineralizes weakened enamel to help strengthen teeth and fight cavities.