Whitening product that can be used at home following prophylaxis treatment. Contains 6% hydrogen peroxide bleaching gel and XS151; a special accelerator that activates while brushing. Hydrogen peroxide absorption rate is increased exponentially compared to traditional bleaching with a tray. Patient should brush for 2 minutes a day for a total of 10 days, meaning there is only 20 minutes of contact with the hydrogen peroxide. Easy to use, with less irritation. System 2 Kit includes ENA White Professional Bleaching System x 2.