At life UNpacked one of our values is progress over perfection, and while a bamboo toothbrush with nylon bristles certainly isn’t perfect, we believe it is the best option out there right now. There is a non-nylon option that uses boar hair to make bristles, but that restricts its use for people who avoid animal products. As such, nearly all bamboo toothbrushes on the market use nylon. You may come across companies claiming to have biodegradable nylon options, however, our suppliers have tested and confirmed that nylon will only biodegrade under very specific lab conditions, not in our environment.