Review (4/5): Works But.... One caveat
The cancer-causing sweetener Saccharin is in the whitening gel. Gave me terrible heartburn, lasted all night long. Suggest not doing this at night, because of that!
As far as whitening goes, it's easy to use. If your teeth are very yellow, it won't make them white, but it will improve them.
Can we please put some other more Natural sweetener in this? Like sucralose or monkfruit or something?