You won't get a hollywood smile

It was my first experience in whitening teeth. I used the gel and the rinse everyday in mornings and evening for two weeks. At first I left the gel in for 5 minutes, but for me that wasn’t enough, because I couldn’t see any (even small) changes. Then I increased the time to 7-8 minutes. During those two weeks and after my teeth were feeling good, the enamel wasn't damaged and the sensitivity didn't increase. The changes in color were small, just a few tones. Unfortunately, as soon as I stopped using this kit, the condition of the teeth returned to the previous one.