Neutrogena Clinical, free w/rebate.

Here's a pretty solid value for rebate lovers: get a mail-in rebate for the full purchase price of a Neutrogena Clinical product, up to $40, when you purchase before 7/31/10. Sure, you have to wait 6-8 weeks to get your rebate check (which is standard), but getting your full purchase price back on an item that costs up to $40 is a pretty amazing score!

I'm not familiar with Neutrogena Clinical, but it sounds very scientific, and science isn't cheap. Except when it's free, which is between now and July 31, so get going!