Hairbrush made from 100% biodegradable, bamboo and rubber. They are soft, smooth and free from sharp corners, so detangle your hair gently. The bamboo teases the natural oils from the scalp along the strands making hair shinier. It also has a neutral to negative charge which causes less static. The natural rubber massages the scalp increasing sebum production which make hair softer. It also increases blood flow, which helps to strengthen the hair.