So I decided to try the Crest Whitening strips. I'm using the 7 day kit (Or the "Premium"). I'm 3 days in (And have seen tiny results already: yay!) , and I am experiencing the tooth sensitivity they warn you about ... which is annoying. But I'm actually dealing with that part ok.What I want to know, for anybody that has used these, is if you experienced the extremely painful "burning" feeling while the strips are actually on? The first treatment or 2 was fine, but 4 or 5 strips in, I'm experience searing pain on contact with the strips ... and the pain pretty much doesn't subside until I remove them 30 minutes later.Is this "normal"? Should I call it quits now, or press on for the remaining 7 days repeating the "pain is beauty" mantra?
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