Charcoal whitening is a trendy way to quickly whiten teeth, but is it enamel safe? Dental professionals say it is not.
Charcoal's particle shape creates etching of the enamel, which will lead to increased future staining. Any product that whitens your teeth with harsh abrasion will result in loss of enamel and may create sensitivity. Enamel loss is permanent.
Here is a link to an article about charcoal toothpaste in Today's RDH.