Review (1/5): Don't use this unless you like pain!
This is the worst product I have ever bought for my teeth! I have begun drinking lots of coffee because of a new job and my teeth have began to look a little discolored so I decided to try this out. I read the instructions and proceeded to brush my teeth. No problem. I rinsed and looked to see no difference. Ok....... Maybe it'll take a few tries. After finishing I still had charcoal in my teeth so I read you can floss or brush your teeth after to help get it all out. I brushed my teeth and it was like rubbing sand paper on a open wound after adding hot sauce. Then to rinse my mouth out was just as bad! About 2 hours later I tried to eat and it was so bad I couldn't finish my eggs. Please don't buy this. I am throwing it away!