Fast-dissolving Whitening Strips make all your worries about strips disappear. These convenient, easy, and safe strips are designed for busy people who want results fast and without the messiness of traditional (non-dissolving) strips. They’re also ideal for those who like whitening but suffer from painful sensitivity caused by other longer wear strips. And they can even be worn at bedtime while sleeping. Fast-dissolving Whitening Strips have a short wear time – just once a day for about 15-20 minutes (until the strip fully dissolves). This is 2x faster than the leading Whitestrip 1. Over the course of 1 complete treatment (7 days), these strips can whiten teeth up to 9 shades2. 1Results and wear time on teeth vs. the leading Whitestrip for 7 days. 2Maximum results when used as directed. Results may vary.