Title: I tried them all
Review: I tried Rembrandt before, and their product worked but it wasn't very good. The best product I have tried is Crest Whitestrips Classic. I haven't tried the premium but it really does work. One thing to look out for though, is how you place the strips on your teeth. If you don't press it against the cracks, you end up bleaching the front and then you have vertical lines in your mouth of unbleached yellow.
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