Whichever foundation you choose, a dusting of powder on top helps. One trick, after primer, foundation, concealer and powder: take an ice cube and cover with a single layer of paper towel, moisten your finger tips and pat the towel and cube so the towel is damp, but not wet. Then, lightly pat the towel-covered cube all over your face, then wait a few minutes and finish eye makeup, blush, etc. I’ve found this is the best method to ‘set’ your makeup, and help it to last longer. I also like this when my face is a bit dryer and it helps to make powder looks “powdery,” more dewy.