Cr Time Inc Digital Studio
InStyle Staff
Jul 10, 2011 @ 1:00 pm

We all know to toss sticky lip gloss and dried out mascara, but how can you tell when your makeup has just expired? We've rounded up a list of different products and their shelf lives, from nail polish to sunscreen. Click through to learn when to throw away your makeup!

MORE:• Melt-Proof Makeup Must-Haves!Gorgeous Summer Makeup PalettesCheck Out Mac's Beauty Blogger Collection!

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