Review title is Excellent Whitening Power [SEP] This product does an excellent job of whitening your teeth. BUT, make no mistake about it -- IT IS MESSY!! It's like handling ink toner for copy machines, back in the day when you poured toner powder into the machine. You WILL be rinsing way more than with toothpaste (by the way, AW charcoal toothpaste is wonderful). Make sure to rinse your sink before it dries. This stuff seems to get everywhere. Where this product doesn't do as great a job as their toothpaste is in leaving your mouth fresh. I found that my mouth felt a bit gritty afterward. In fact, I followed my use of it with brushing my teeth again with their toothpaste. But, EXCELLENT at whitening.