As I tried to “thin” a liner brush I ended up making myself a mini-rake brush and it worked really well for eyebrows.
Maybe you should try it. If you don’t like it, don’t bake.
The problem with painted hair is that you can’t finish the whole head and then decide if you like it. The strokes of hair can’t “intersect” with one another, so you have to do layers… And, what if, on the 10th layer you realize it’s HORRID?
I couldn’t convince myself to do it yet.