Some people have said that those Listerine Whitening strips work, but some say they don't. What are some brands that you have used and been happy with the results? Thank you for your answers :)
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The Crest Advanced Seal strips weren't that great. I found that the best & cheapest teeth whitener is hydrogen peroxide. Pour equal parts water & hydrogen peroxide into a little cup & swish for 30 seconds (Don't swallow it, you'll get sick!). Do this for a few days & your teeth will be whiter.
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