Fairywill teeth whitening strip is with dental formula. The whitening gel on the back of the strip is MOISURE-ACTIVATED, fully release efficient whitening factor to remove manner and set-in stains.24 blue LED bulbs versus, compared with the 5 whitening lights on the market, the energy is doubled, and it can reach to every tooth, not just the front teeth.10 minutes to whiter teeth. In only 10 mins see visible results after only 2 to 3 uses, with long lasting of 120 days with the full treatment.The combination of the whitening strips for teeth and the led light come together to remove not only surface stains but stains embedded deep in the enamel for magnificent all-around whitening results.The soft texture and ergonomic design makes it comfortable to use. The whitening light and tray can easily be cleaned, and the provided case can keep it clean and sanitary for fully hygienic use with no assembly required.