Instructions for use: 1-If your bristles are bent when you receive a bamboo toothbrush, you can make it neat by soaking the bristles in warm water for about 10 seconds. 2-Bamboo charcoal bristles are slow to degrade, and we recommend removing the bristles with a pair of pliers when you discard your toothbrush; the rest of the handle can be completely biodegraded, or you can reuse it for gardening or transform it into a work of art. 3-Since our products are made of pure natural bamboo, we always recommend that you put the bamboo toothbrush in a ventilated and dry place.