What is the brown gunk that builds up in your toothbrush?

Question

What is the brown gunk that builds up in your toothbrush?

In: Technology

Answer 1

There shouldn’t be any brown gunk on your toothbrush if you rinse it properly and replace it periodically. Any buildup is not good buildup. It could be tartar, loose food particles, mold, etc.

Answer 2

Question: are you aware you’re supposed to change toothbrush every ~3 months?

Answer 3

Are you a smoker? If so, it could be because of the ashtray in your mouth…