The answer is yes when used in the right way.  Charcoal can be very effective at removing stains from teeth through the use of abrasion. This means that charcoal particles scrape the surface of your teeth to remove stains. For this reason, it is essential to use cosmetic-grade charcoal from reputable sources that can provide Safety Data Sheets that confirm how an ingredient can be safely used. We purposely formulate our tooth powder to be gentle. We have found a balance that allows our tooth powder to effectively whiten teeth and freshen mouthes without hurting enamel and gums. *We are not medical professionals. Please always consult your dentist or doctor for any medical/health questions.