Charcoal is so HUGE right now, its in everything! We have face mask, cleaners, and bars of soap! But, did you know you can whiten your teeth with it?!
I do this 3 days a week- Mon-Wed.
Heres the one I was using http://amzn.com/B00LAEK1Q8
A more affordable one is http://amzn.com/B0006LCQ4Q