if you really want to be cheap, buy some fine oatmeal from a healthfood shop- I can't think of the actual name - but its pretty fine. Put in some coarse brown sugar and use it in the shower - perfect for sensitive skin and will cost you maybe $4-5 for a whole heap - although it is quite messy. If you want a mask, then just leave it on for 10 minutes (although you do have to stay horizontal during this time)