Go Smile Whitening System, 20 Count

This formula is the only one that doesn't make my teeth and gums sensitive to liquids. I was skeptical of the high price, but after reading many reviews, I decided to try it. It's easy to apply. You pop out the plasticky feeling tube and put it in the cardboard cover. A snap, and the liquid starts flowing to the rubbing tip. The tip is not a brush, as I was led to believe, but more of a pad. It feels a little weird rubbing on the teeth, and a little hard.
There's enough juice in each ampoule to do your teeth twice, it seems like, so I cheated and shared each application with my husband. (probably not a good idea...but what the heck, we kiss, so what's the difference, right?!)
The B1 is the highest color of white you can achieve on the color comparison strip at the dentist's office. I will say that the dentist was unpleasantly surprised that he couldn't sell me his OWN whitening after I used the GoSmile. :) It works better than the strip treatments because you can rub it...Read more

Bought this for my teenage daughter. Used it according to package. Her teeth are still the same yellowish color with a few "spots" of white on a "few" teeth. (ugh)
Don't buy it!!!

I don't have particularly dark or stained teeth, but I bought this expecting to brighten up my smile for a while. $88 later, I see no difference at all. This whitener was delightfully gentle on my gums and the taste was actually pleasant, but I may as well have been applying water because this doesn't work. I recommend buying Rembrandt for about $10, or tripling your cost and paying for a dentist to whiten professionally. What a rip off!