Crest Teeth Whitening Strips are thin, flexible strips that come pre-coated with a whitening gel containing hydrogen peroxide — the same ingredient many dentists use. You apply them directly to your teeth and leave them on for about 30 minutes. During that time, the strips work their magic, lifting stains and brightening your smile. It’s a simple, no-fuss way to get a visibly whiter smile in just a few uses.
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