SOLADEY is Japan’s first toothbrush series developed by applying patented technology, which is scientifically proven to remove plaque using only light and water. Equipped with a TiO2 (titanium dioxide) semiconductor and solar panel in the handle, SOLADEY N4 has the highest scientific effect among other models in the series, enabling you to brush your teeth easily and effectively anytime and anywhere. We aim to improve oral care wordlwide as well as offer a product that lets you clean your teeth easily. Photocatalytic technology that allows easy stain removal by using water and light is a technology developed in Japan. Applying such technology, SOLADEY toothbrush lets you brush your teeth anytime anywhere if you have water and light. It doesn’t require toothpaste although further effect can be expected by using it. The compact brush head allows for easy access to molars and lets you reach all your teeth regardless of tooth’s shape or alignment. In addition, all the mechanisms are built within the handle so you only need to replace the brush head when it’s worn, enabling a long-term use. The SOLADEY series eliminates plaque effectively through scientific approach. Its superb usage and performance have been recognized worldwide, and the products are now sold in 30 countries while the unique functions are patented in 15 countries and regions worldwide. Products are available in four Japanese traditional colors.