Charcoal is great for grilling foods. Turns out, it's also good for cleaning teeth. The Nano-B Toothbrush has bamboo charcoal particles on half its bristles, leveraging the material's natural whitening properties to give you a brighter smile. The other half of its bristles have genuine gold nano-particles that kill bacteria, both in your mouth and on the brush. All the bristles are cut in a way that rounds their edges, so they're softer on sensitive enamel and gums, and are double-layered, with long bristles to clean hard-to-reach areas, and short bristles for polishing. Travel case included.