I went here a couple of months before my wedding to get the "state-of-the-art" whitening done. After paying $600, I was pleased with the results.... for only two days. Over the next week or so, the bright white started disappearing in spots, giving my teeth a spotty look, lasting for a few weeks. Fortunately, the spotty look disappeared by the time I got married. Unfortunately, my teeth were back to the way they looked before getting the whitening done. I can only guess that they must have missed some essential part of the whitening process. However, after some initial resistance, they refunded me the full amount.
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