Crest 3d White Vivid Teeth Whitening Strips 12 Count
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I stopped using this after two though because I didnt want to weaken my enamel which would e the con.
if you use this too much it will weaken your enamel. My friend used up the box and you can tell her enamel is peeling ( though their may be other factors to this) but she does have extraordinarily white teeth. They're a light in the dark.
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