Beware!!!
The first time I opened this, it exploded in my hand, all over my sink, and all over my bathroom floor.  The amount that was wasted was disappointing.  Even now, when I open it, I still have to be pretty cautious to not have a spill.  It's very messy to use which was to be expected so I can't complain about that.  It also seems to whiten my teeth as well.  After use, I definitely experience a super clean feeling.  I wouldn't recommend brushing your teeth with tooth paste and then using this because my gums/mouth felt raw afterwards.  Now I just use this a few times a week at night when it is time to brush instead of following regular tooth paste with this.
Rating: 3 stars