Using activated charcoal is the newest big trend on the health and beauty scene. Kim Kardashian, Shailene Woodley, and Gwyneth Paltrow are just a few of the celebrities who promote this black, grainy paste for whiter teeth. But is this viral whitening treatment really effective and safe to use? Read on as your cosmetic dentist explains the benefits as well as the drawbacks of using activated charcoal on your teeth and how you can get the brighter smile you’ve always wanted.