When you apply Crest Whitestrips to your teeth, the hydrogen peroxide in the gel penetrates the enamel and reacts with the discolored molecules in your teeth. This reaction breaks down the stains and lifts them from the teeth, revealing a brighter and whiter smile. The strips are designed to be worn for a specific amount of time each day, usually around 30 minutes to an hour, depending on the strength of the Whitestrips.
https://techplanet.today/post/....unlock-your-brightes
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