Crest Whitestrips Classic is an enamel-safe teeth whitening system that provides visibly whiter teeth for 12 months. This product contains thin, comfortable strips that mold to the unique shape of your teeth and also contain the same ingredient Dentists use. Use these strips twice a day, for 30 minutes, and if your teeth aren't noticeably whiter in 28 days, contact Crest Whitestrips for a full refund.
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