When did you last replace your pillow? Changing yours regularly will prevent allergen build-up and enhance sleep quality, but when exactly should you be buying new ones?

According to TikTok user @mama_mila_, a simple test can tell you when your pillow has "expired". Chantel Mila, a mum-of-two from Melbourne, posted a video explaining that pillows should be replaced every 1-2 years as they harbour dirt, dust, bacteria and skin cells.

In her video, she said that in order to check if your pillow needs replacing you should fold it in half and hold it for 30 seconds. If your pillow is still fresh, it should bounce back to its original shape. If, however, it needs replacing, then it will stay crinkled up.

pillow on bedpinterest
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Many of her followers explained they were loving the hack, with one person saying: "This is such a good idea, I never knew you could do this." Another added: "It's definitely still vital to wash your pillows quarterly."

While it's important for your health to replace pillows, some styles will last longer than others. Polyester pillows, for example, will need changing more often, while memory foam designs will keep their shape for longer (anywhere from 18 to 36 months).

According to previous research, you can extend their lifespan by investing in high-quality pillows and adding a zipped protector.

Want to see when you should change yours? Take a look at her hack below...

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Lisa Joyner
Deputy Daily Editor, Country Living and House Beautiful

 Lisa Joyner is the Deputy Daily Editor at House Beautiful UK and Country Living UK, where she's busy writing about home and interiors, gardening, dog breeds, pets, health and wellbeing, countryside news, small space inspiration, and the hottest properties on the market. Previously, she has written for Conde Nast Traveller, House & Garden and Marie Claire magazine. Lisa studied at University For The Creative Arts, where she completed a BA in Fashion Journalism.