Even though we have seen heavier, thicker brows on the runway, I think it’s going to be quite some time (if at all) before we see thick brows to that degree. Crackle polishes, too, I don’t think will ever be fully popular at a mainstream level.
For a few things, I might try to repurpose it–if I can–but more often than not, I try to recycle or else throw away (if it’s not recyclable) because I can’t hang on to all of these things if I don’t have an actual reason to!
Like most things, to an extent. I’m willing to, if it is a brush I’m going to use (and this is past experience speaking!) all the time. It’s important to me that a brush be enduring and made well so it doesn’t fall apart within a year, leak dye every time you wash it, or smell funky after a wash.