Didn't work for me
I was excited after reading several reviews . I followed instructions and even brushed and flossed prior . I know if people have tartar this will take it off as far as changing the color my teeth it looked the same . But it is polished  my teeth for sure which gives a lighter appearance which I thinksome may have seen  . I did a white cloth to my teeth photo and didn't see a change in colors . I will try to do this for a week and update if any changes !  It did not bother my gums like some other reviews or my sensitive teeth ! I also took a star off for the messiness lol be ready to get it everywhere if you have an electric toothbrush luckily it cleaned easy . Hope this helps
Rating: 2 stars