Cool idea, but messy
The charcoal seems to whiten my teeth a little, and I like the fact I'm brushing my teeth with Bentonite clay and salt. If you like licorice, you'll like the taste of this tooth powder. The only thing I don't like is it's very messy.  The black powder gets everywhere.  I contacted Redmond and they say they are working on a peppermint charcoal toothpaste.  I think I'll like that better.
Rating: 3 stars