I bought this off Amazon a couple years ago (mine was vanilla but tasted like charcoal). It’s horrible for reasons other than healthy teeth. The powder is super fine and gets all over everything. And I mean EVERY THING. Including any superficial scratches your glass/marble/enamel/porcelain fixtures may have. And the blackness goes deep. It’s nearly impossible to clean and you have to wait for it to just wear off in like a month. I threw the crap out after one use.