This thing is really cool! I use it when I use the Complexion Rescue foundation stick. Easy to use, blends very well! The product stays on your face and not on the blender. So no worries on wasting product with this thing. I’ve only used the side that leaves the velvet finish (black side). So I can’t say anything about the other side(clear side) I put a couple of swipes of foundation on my checks, one across my forehead, a little of nose and chin and of course , my neck. Take the blender and spread the foundation over my skin. No steaks or patches. Flawless looking skin. 🥰