I don't have the brush as of yet but am doing the research.
I was thinking of using a similar knot as the old one. It looks like a nylon so I was wondering what would be similar.
1) Boar in white,,,if there is such a thing.
2) Synthetic of some sort. I have no idea how they compare to boars. Do they eventually soften ?
3) Something else in white.
What do you think ?