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Title: Buy from a reliable source.
Review: First, it didn't work and second the content of the last syringe was almost dry. I have used Opalescence in the past.What BRIGHTERSMILE is selling is totally different with what I got from my dentist in terms of whitening effectiveness. In my opinion it is better to buy from dentist at higher price or a reliable source rather than this company that provides a useless/defected but cheap product.
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