My teeth have been kinda yellow my whole life and i'm so sick of it. I've tried crest write strips before, but they never stay on my teeth and I just end up swallowing the gel. Right now i'm using arm and hammer toothpaste with extra whitening AND a whitening booster on top of that, and i brush my teeth 2 or 3 times a day. no improvements yet... what worked for you?
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