I received this question from a friend, and it got me thinking about toothbrushes again. “I’m trying to buy some plastic free toothbrushes. Have come across a number of options. Just wondered if you had done any research on this that you may want to share. Also wondered if you could help me with the difference between “nylon -6” biodegradable bristles and “nylon – 4”. Sounds like a con to me as nylon and biodegradable is surely an oxymoron.” I haven’t really thought about toothbrushes for some time, ever since I started using a Monte Bianco toothbrush that I bought about 6 years ago now. It’s not that I’ve been using the same toothbrush for that length of time, but it’s because the toothbrush…

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