You can't scroll through social media without seeing an advertisement for charcoal teeth whitening. I ordered some so I could try it and let you know what I thought. I tried it on the air...it was interesting. 

Blk Diamond Charcoal Teeth Whitening: C-
Reasons: EVERYTHING was black -- my hands, the countertop, and my face. My gums had tiny bits of black in them the rest of the day but it may have been because I didn't have my regular toothbrush with me.

WAtch and see how it went!