You're Covered: We Explain What You Need to Know about Makeup Expiration Dates

by Lexy Lebsack

We know you don’t want to throw away your favorite blush or lipstick, but abiding by makeup expiration dates is actually very important. Why? Cosmetics trap bacteria, which means replacing them regularly is necessary to avoid skin irritation, breakouts, eye infections, and styes. But unlike the contents of your fridge, the use by date on your makeup products are reliant upon the first day you use them, not the purchase date.

How do you know when to toss that foundation or mascara? The more moisture the product has—or the closer it comes to your eyes—the shorter its lifespan, once opened. Separation or changes in texture or smell are dead giveaways the product has gone bad. Simply click through our slideshow for exactly how long you can use your favorite products without worry.

This post was originally published at an earlier date and has since been updated.

Next up: 6 makeup product pairings Byrdie editors think were secretly meant for each other. 

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