Double ended brushes.

[astronaut]

Yeah there are some Stila brushes that feel very soft that I'm interested in, but they are double ended. I feel there's no other choice but to lay them flat, and I don't do that. Also, I might be interested in one end, but not the other.

 

[OfficerJenny]

Idea is good, but when you put them in a makeup bag or something it's easy to mess up one sides bristles and not the others

or both sides

:c