Overview
- Amazon reduced the kit to roughly $34.99–$35 during the Oct. 20–21 Amazon Beauty sale, a savings of about $11 or 24% off the $45.99 list price.
- Each boxed kit contains 22 treatments (44 strips) with one strip for upper teeth and one for lower teeth per application and wear times that depend on the version at about 45 minutes to one hour.
- Crest advertises that the peroxide-based formula can brighten teeth up to 19 shades in 22 days and says the strips are enamel-safe when used as directed.
- Customer reviews collected in coverage note common tooth sensitivity, awkward application or taste for some users, and shoppers often space treatments or switch toothpastes to manage discomfort.
- As an over-the-counter alternative to professional whitening, these peroxide strips deliver varied results by user and their price has tracked promotional events like Prime Day and seasonal sales, so short-term discounts may be the best chance to buy cheaply.