Crest 3D White Professional Effects Whitestrips
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The positives, I wait till they are on sale at CVS and usually I have a coupon so they end up only costing me about $30,
Within a few days I start to notice a difference in the color of my teeth and they appear whiter and they are simple to use. Also if you are traveling they are easy to throw in your toiletry bag and take with you!
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