Pillows can become flat and absorb a ton of detritus after one to two years.
Pillows provide neck and back support, so it’s important to replace them every one to two years, according to the National Sleep Foundation.
Not only do pillows flatten over time, but also they can accumulate dead skin cells and hair, in addition to absorbing body oil. This detritus helps dust mites, a common allergen, thrive.
When pillows become lumpy or stay in half when you fold them, it’s probably time to replace them.
And, if you want your pillow to last longer, wash it every six months and cover it with a protectant case.
