Charcoal whitening is a trendy way to whiten teeth quickly, but is it enamel-safe? Dental professionals say it is not.
Charcoal's particles have sharp edges. It can etch the enamel, which will lead to increased future staining. Whitening teeth with harsh abrasion will result in loss of enamel. Enamel loss can create sensitivity. Enamel loss is permanent.
Here is a link to an article about charcoal toothpaste in Today's RDH.