Or is it false advertising? This is assuming I won't be drinking any caffine, smoking, or anything like that, so I'm not going to be counter-effecting (or whatever) my teeth whiteness.
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Yes, it will gradually whiten them, its not like a sudden thing. It also helps if you use one of those vibrating toothbrushes. Especially the first time you use a vibrating toothbrush it knocks off an amazing amount of brownish stuff and you teeth look noticably whiter even then.
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