3.6 billion toothbrushes are consumed annually worldwide. Most of its toothbrush handles are now made of plastic. If it is not properly processed and thrown away, it will remain on the earth semi permanently as plastic waste. So We made a natural toothbrush made from bamboo. 100% natural bamboo is used for the handle, and a biomass brush produced from plant derived castor oil is used for the brush. It contributes to the reduction of CO2 concentration, which causes global warming, and the reduction of fossil resource consumption. You can now engrave text on this bamboo toothbrush.