Humble Brush – the world’s sold bamboo toothbrush for adults. Humble Brush has a handle made from 100% biodegradable, sustainably-grown bamboo. The bristles are made of nylon-6 bristles from Dupont. The packaging is eco-friendly, the box and inside wrapper are made from recycled materials, and can be thrown out with the organic trash.Go Humble, Give Smiles – Every Humble purchase goes towards funding oral health projects for children in need.Ingredients:Natural bamboo handle, nylon-6 bristlesLet’s talk about the bristles.We want to offer the highest quality toothbrushes without losing sight of our values for sustainability and making the world a better place.We chose to use nylon-6 because it has a lower hardness (which is good for your teeth) and a lower water absorption (which is good for keeping your brush hygienic) compared to other types of nylon. It’s a strong, durable and hygienic synthetic material. We’re proud to say that our bristles are produced by DuPont, the first major manufacturer of nylon bristles with over 70 years of experience.To summarize – Brush without worries!