12. Tooth-Whitening Strips
Duration: Thirteen Months
* Average Cost: $44.99 for 28 strips
An affordable alternative to seeing the dentist for expensive teeth whitening is to use Crest White Strips, which are available over-the-counter. Not because the teeth whiteners are dangerous, but rather because the substances’ effectiveness has decreased, Crest.com suggests not using their products once they have expired.
Whitening Dental Strips ©Whitening Strips for Teeth and Shutterstock
Generally speaking, you should use teeth-whitening strips within a year. The primary component, which is typically hydrogen peroxide or carbamide peroxide, then starts to degrade. Although the teeth-whitening strips may slightly whiten your teeth, the effect won’t be as strong as it would be if you utilized them right away. Use teeth-whitening strips within thirteen months of expiration, as they are too costly to be left unused.
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