If you're looking for a reasonably priced powder brush that does the job and doesn't cost the earth then this is the one for you. It's from ELF (eyeslipsface) which is a rather hit and miss company for me - some of their products are pretty yucky (try gloopy, funny smelling lip glosses or half broken scratchy brushes). But others (in particular the studio range products) are very, very good quality - like this brush.
It applies powder products really well and it's good for setting foundation with a finely milled powder but also great for blush application. It's also synthetic so it also works really well for applying liquid foundation if you want a heavier coverage with that "airbrushed, flawless" appearance.
All round it's a great brush. Nothing negative to say at all. You can purchase the brush here.