So how do you know when it’s time to change them out? Here are 8 expert-approved signs that your pillows are overdue for a refresh. “The reasons pillows expire is simple, and actually, kind of gross—over the years, your pillows will harbor a build-up of dead skin cells, dust, and oils from our hair and skin, as well as any liquids, spills, and stains,” he says. “All of which create the perfect environment for dust mites to thrive.” Discoloration is another sure sign that your pillow has seen its final days. “Over time, pillows can become stained and yellowed from sweat and body oils,” she says. “Sleeping on a yellow pillowcase can attract other bugs to your bed, that will want to feed off the moisture.” Any kind of spots or color? Just replace them. “As pillows age, they begin to break down and provide less support,” she explains. “Improper support can cause neck, back, and shoulder problems. It can also leave you feeling stiff in the morning and cause headaches and migraines.” She adds that lumpiness is a sign that the “supporting material in your pillow is starting to wear out.” It’s not worth ignoring either. This small detail can translate into a lot of lost sleep and reduced comfort throughout the night.
