Sustainable wooden toothbrush made with 100% plant-based bristles and an FSC® beech wood handle. The medium pile is made from 100% castor oil made in Germany and the wood comes from sustainable FSC® beech wood also from Germany. Maintenance - Use minimal pressure, do not chew or bite. Replace it every 6 to 8 weeks or sooner if it is worn. Rinse the toothbrush before and after use, air dry.