Teeth whitening works through a simple but effective chemical process.
The active ingredient in most whitening products is hydrogen peroxide or carbamide peroxide. When applied to teeth, the peroxide breaks down into oxygen radicals that penetrate the enamel and break apart stain compounds.
This process is safe for enamel when used as directed. The American Dental Association has approved hydrogen peroxide-based whitening products as safe and effective.
Crest 3DWhitestrips use a thin, flexible strip coated with a hydrogen peroxide gel that conforms to the shape of your teeth for even whitening.