Theres several different Crest Whitening Strips like Crest Whitening Premium Plus, Crest Whitening Overnight, Crest Whitening Classic, etc. I did a whole box of Crest Whiteneing Strips Premium, then a few months later I did a box of Crest Whitening Strips Classic because someone gave it to me for free and I was bored. My teeth are whiter than before and I would like to a little more whiter but don't want to go to the dentist and pay an expensive price for teeth whitening. Which Crest Whitestrips product should I get that whitens my teeth fast and lasts long. Im think about getting the Premium Plus Whitening Strips once again because they worked pretty good. What should I get?
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