Teeth whitening kits can include strips, trays and/or brushes that allow you to put a substance on your teeth for a more extended period of time than toothpaste. These kits usually contain peroxide which bleaches your teeth to reach stains deeper than surface stains. Again, look for the ADA Seal of Acceptance when considering over the counter teeth whitening solutions.
Timeline: They take about one to two weeks to see results when used daily for a few hours.
Cost: varies, but expect to pay $50-100 for an at-home kit.
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