The shelf life of cosmetics.
CONCEALER: Up to 12 months
FOUNDATION: Water based up to 12 months - Oil based up to 18 months
FACE POWDER: Up to 2 years
EYE SHADOW: Up to 2 years
EYE LINERS: Up to 2 years
LIP COLOR: Up to 2 years
MASCARA: 3 months
NAIL POLISH: 12 months - depends on the quality
Don't forget to wash your makeup bag too or it can become a bacteria breeding ground.
Rouge Bunny Rouge Beyond The Looking Glass Look for Winter 2011 via polyvore.com