- Compostable: made from panda-tasty Bamboo - Plant-based: bristles from Castor oil bionylon - All natural: BPA-free bristles & zero synthetics - Zero-waste: recyclable plastic-free packaging This brush has medium BPA-free bionylon bristles made from Castor oil & a kid-sized handle made from fast-growing, panda-tasty Bamboo so even the little ones can join the tooth-brushing party. Materials: Bamboo handle^*, Bionylon bristles*. ^Compostable, *Renewable. Packaging: Cardboard box^ & vegetable ink^. ^Recyclable How to use: Angle your brush at 45 degrees & brush in short, half-tooth-wide strokes from the gumline down. Angle up for upper teeth, & down for bottom teeth.