they’re stored in a dry, cool place.
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5. Mascara
Because the applicator used to apply mascara is constantly being exposed to bacteria in the air, it’s best to toss out your mascara every 90 days.
6. Nail polish
Unopened nail polish can last forever, but let’s be realistic: Nail polish is meant to be worn! Once it’s been opened, the ingredients in nail polish begin to evaporate, causing the polish to thicken and separate over time.
Toss it after two years.
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7. Sponges
This one shouldn’t be that big of a surprise. I mean, come on! Anything that’s used to clean other things has got to be crawling with bacteria, right?
Ideally, you should throw away your sponge every time you use it, but to extend your sponge’s life, wet it, and heat it in the microwave for one minute to kill germs.
8. Insect repellent
If you’ve had your insect repellent for any longer than two years, we hate to break it to you, but it’s absolutely useless at this point.
9. Rubbing alcohol
Once the seal has been broken, rubbing alcohol is only good for about two years. After that? The alcohol starts to evaporate, making the solution weak and no longer able to kill bacteria.
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