Having a make-up collection that rivals that of a Sephora staff member is always fun, but when the blush and balm, polish and powder begin to age and expire, can your face really be looking that good while wearing it? Sometimes, you have to part ways with the products you’ve had for a while. Here’s why:

TIP: Consistency of the product is key. The more moisture a product contains, the more it harbors bacteria. Therefore, you can keep powders longer than cream products.

TIP: As for liquid products, foundations in pumps are the least bacteria-prone because you’re not constantly exposing the makeup inside the container to bacteria on your hands or on a brush.

TIP: Replace cream and liquid products every 6 to 12 months and powder products every 1 to 2 years.

TIP: Mascara is particularly important to replace and should be dumped after 3 months. It dries out over time (making it ineffectual); moreover, the eye area is very susceptible to infection.

TIP: You also shouldn’t share makeup because this makes bacteria accumulate even quicker. In particular, you should never share mascara, lipstick or lip gloss…but don’t go overboard.

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