Before I ordered the strip me, I've read the reviews, and was not sure if I should order me to me. Ultimately, I did it, and I must say that I have or had no problems with his teeth. I first used for a long time ne Biorepair toothpaste before I used the strips, perhaps that's one reason that I had no problems afterwards. Conclusion: no white spots, no pain and a good result. Recommendation: Before using toothpaste that builds the enamel!