Our charcoal toothpaste tablets are formulated with activated charcoal, which has absorbent properties. When you brush your teeth with charcoal toothpaste tablets, the activated charcoal binds to stains and toxins on the tooth surface, helping to remove them and leaving your teeth looking brighter. Note that there are no whitening agens in our formulations (dying the teeth to a whiter shade). Our charcoal tabs work by eliminating surface stains that might've built up from using coffee, tea and food that causes discoloration.