It's hard parting with make-up (especially when it cost a pretty penny to score in the first place), but here's why you should: that stuff all expires. You don't want to risk getting an eye infection by using old mascara. In fact, that should be replaced every three months because it's the perfect home sweet home for some really nasty bacteria. Keep this list in mind to know what's still good and what to throw out!
Image: realsimple.com