Is Cocofloss biodegradable? March 06, 2018 19:28 Updated No, Cocofloss is made of polyester fibers that are not biodegradable. Related articles Is Cocofloss recyclable? What's Cocofloss made of? Does Cocofloss contain any PFAS? Is Cocofloss cruelty-free? How do I insert Cocofloss refills?