Coffee grounds are abrasive enough to scrub with, but are soft enough to be used on your face. Gently massage a small amount of spent coffee grounds into your face to use as an exfoliant. The sensation was like rubbing sand into my face, and not unpleasant. My skin was left feeling smooth, tingly and with an espresso aftershave aroma that would make Juan Valdez
Feel free to get carried away and give yourself a fearsome coffee-beard while you're doing the exfoliation.