Hello!! I actually don't use a really special brush. I'm...fairly certain that it's the regular hard round brush, the one I use for lining. I'm not super experienced with the whole brush making thing and all those fancy brushes that artists more experienced at the program make. All the ones I use regularly are pretty standard. I do have a lot of brushes that I've downloaded just to play w/ for shits and giggles but I don't use them that often in comparison to the round one I mentioned and another soft airbrush for colouring