I really like using cream/gel eyeliners, but you need a good brush to apply them with. I have a few from Sephora, but this e.l.f. brush is my favorite!!! (And who doesn't love the price tag!?!) As you can see from the picture, I have two: one for brown liners and one for black, which makes cleaning and multiple uses easier. I use these brushes with my Sephora gel eyeliner duo and with my Maybelline 24hr Color Tattoo (which make great liner as well as shadow bases). I have good control with these brushes, the angled tip is very helpful, and the brush is skinny enough to make a nice even fine line.