I have some bad news.
I’ve been looking everywhere, and vegan floss that is also zero waste doesn’t exist, at least not yet.
Zero waste flosses all contain either silk or beeswax (be careful of silk flosses saying “vegan”, which only refers to the wax coating, it’s very deceptive).
Vegan flosses all seem to be made of plastic, and coated with vegan materials.
The closest you can get to a vegan zero waste floss right now is a vegan floss with non-plastic packaging. At least that lets you reduce a big chunk of the waste.
There are 2 options that currently fulfill this criteria.
This is the better of the 2 options when it comes to quality.
It works just as well as “regular” floss, but it comes in a cardboard box to reduce waste.
The floss itself is made of nylon, coated in a custom blend of vegan waxes and essential oils.
Another positive is that there is 100 yards per box, which will reduce how often you’ll need to order it (further reducing on packaging waste).
This floss is made of polyester mixed with bamboo charcoal (so not pure plastic at least), and coated in candelilla wax.
It comes in a little glass holder, which is refillable.
The downside besides the fact that it still contains some plastic is that the quality of the floss is not amazing.
It’s a thick floss, so if your teeth are particularly tight together, you may have difficulties threading it through. It can also be annoying to unspool the floss.
The idea behind it is great, but the product could be improved.
For now, those are the 2 best options for vegans looking for zero waste floss. I’ll continue to look for better options in the future, and I’ll keep this page updated if I find anything.