3 Simple Ways to Use Activated Charcoal for Teeth Whitening wikiHow
1. Crush a tablet of activated charcoal into a cup or bowl. Take a single tablet of activated charcoal out of the bottle and drop it into a small cup or bowl. You may want to use the back of a spoon to crush it up a little bit. [6] The finer the consistency of the activated charcoal, the less abrasive your paste will be.