Charcoal Powder
I did like the fact that it did not taste horribly bad. I feel it is a bit too messy for me. Think I  prefer paste. I don't like the fact that it leaves a stain in my sink that simply rinsing wont work so I  have to actually clean the sink after i clean my teeth instead of simply rinsing. Too much extra work. I would suggest some neater way to put it on the brush with out wasting too much by the wayside.
Rating: 4 stars