Only a few of them are 100% biodegradable, with bristles made from animal hair, vegetable oil or straw.
Most of the bamboo toothbrushes have bristles made from recycled nylon, so those aren’t 100 biodegradable, but they are still produced a lot more environmentally friendly than plastic toothbrushes.
What are the bristles made of?
Depends. You’ll need to check the package.
Only a few of them are 100% biodegradable, with bristles made from animal hair, vegetable oil or straw.
Most of the bamboo toothbrushes have bristles made from recycled nylon, so those aren’t 100 biodegradable, but they are still produced a lot more environmentally friendly than plastic toothbrushes.