I loved this for my pressed powder foundation. I used small circle strokes and then did the same to apply. I got the perfect amount every time I love the airbrushed look this brush gave me. I didn't have a problem with shedding or dye running.
I used this with a powder mineral foundation in soft, round strokes. It was OK with spreading out the product and working it into my skin, but it also left little bristles all over my face. The finish was nice.
I also used with a liquid foundation, and I think it had a much nicer finish with the liquid. HOWEVER, I still don't recommend the brush because of the shedding issue.
I'd recommend skipping this brush because it sheds badly and bleeds dye when you brush it. It's great for buffing powder into the skin, but having to constantly pluck off bristles while you're applying powder is a total drag.