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 makes Cocofloss better? How long does Cocofloss last? Does Cocofloss contain any PFAS? I have a tree nut allergy. Is Cocofloss safe to use?