Mr. Carve's organic Bamboo Toothbrush is safe for our planet as it is 100% biodegradable and compostable. Oral care product with care for our environment and is sustainable since Bamboo is not a tree but a grass. A Bamboo grows upto 2 feet a day, hence highly sustainable. Our Toothbrush bristles are Charcoal activated and has Anti-Fungal and Anti-Bacterial properties. Let's begin a new world of Organic Toothbrush and save our environment. Dentist recommends to change toothbrush every 3 months or when the bristles appears to fray.