A long, holiday weekend is the perfect excuse to have a Girls marathon, eat lots of pho, and reorganize your makeup. Since expired cosmetics can cause skin irritation and eye infections, it's important to replace them before they go south. Unlike food, though, cosmetics aren't required to have an expiration date on their packaging. Instead, you'll have to keep track of when you opened them. Most products have a jar symbol, in which the number signifies the number of months you have until the item is no longer usable. If you have a hard time keeping track of when you've bought things, just use a Sharpie to write down the purchase date.

If you know how to take care of your cosmetics, your makeup should serve you well. But use common sense: if your gloss is gloopy, your nail polish is separating, or your lipstick has a funny smell — it's time to bid it adieu. And maybe 2014's first resolution should be to never let crusty compacts and congealed mascara make an appearance again. See guidelines for when to replace your makeup below:


Product Toss it . . .
Mascara One year
Foundation One Year
Concealer 12-18 months
Powder 18 months
Blush/bronzer 18 months
Cream blush 12-18 months
Eye shadow 18 months
Eyeliner 18 months
Liquid eyeliner Six months
Eyeliner 18 months
Liquid eyeliner Six months
Lipstick/lip gloss 18 months
Lip liner One year
Nail polish One year
Makeup sponges Wash after each use, then throw away after a month.