honey, oatmeal and yoghurt work well.
but my absolute favourite is green bean powder, mixed with egg white. applied on face for about 5 mins, then rub in curculating motion before rinsing off. no soap needed. It cheap, and works wonder. i used to break out all the time. a friend from taiwan reccommended this. I know in Singapore you can find green bean powder in organic food stores.
I used to use storebought masks, but my skin stung after a mask more often than not. this alternative is really really cheap, like a few cents per mask, and no allergies ever!