Egg whites work great as a mask for oily skin, and do an extremely good job of tightening skin and toning open pores.
How to do it: Break a fresh egg onto a clean plate or bowl.
Dip clean fingers in to get the white part and dab this onto your face.
Leave to dry for 15-20 minutes and then wash off with warm water. (Whip up the remainder for some yummy scrambled eggs!)