Easy and surprisingly effective
I decided to try a tooth whitening pen because it sounded much easier than the trays or strips, both of which I have used in the past. I expected that it would not be as effective since nothing “holds” the solution next to the tooth. But I am sold - it is definitely easier, and I think the brush gets the solution in between the teeth better than the strips. I have been using it twice a week and my teeth have become noticeably whiter. And at this rate the supply will last for months!
Rating: 5 stars