ION-Sei is an innovation in brushing. The ionic technology not only removes plaque but beyond that suppresses bacteria, too. It uses an ultra violet (UV) LED light that reacts with a titanium dioxide bar. Harnessing water and light, ION-Sei also works with your body’s natural electrical charge through a conductor on the handle. This patented technology produces a weak charge that inhibits bacterial growth and helps to attract bacteria from your teeth onto the brush. The ION-Sei project developed by Sanyei from Tokyo fuses the Japanese way of thinking with German product design by aroma_ID.