Bests & Worsts Reviews from Amazon

I was a bit skeptical trying a whitening pen for the first time but it's been a few weeks and it's worked great! There were clear and simple instructions on how to use it and my teeth were visibly whiter the next morning, getting a bit brighter after each use. I heard how people's teeth were a bit sensitive after whitening but mine were a little sensitive after the first application, and never again after that. Great product!