TresWhite by Oplaescence is the first prefilled, adaptable, disposable, tooth whitening system. Whitening your teeth has never been easier! TresWhite's innovative pre-loaded whitening trays have a thin membrane with 9% hydrogen peroxide that adheres to the teeth and remains securely in place. Wear Trays for 30-60 minutes a day, once a day.The TresWhite kit contains 10 upper and 10 lower trays. Aprotective gingival barrier ensures comfort while whitening. No impressions, or models are needed. These trays adapt to fit the entire smile, not just the first few teeth like whitening strips. results are achieved rapidly! Trays are available in mint flavor.