How Often Should Pillows Be Washed?

At the very least, pillows should undergo a good wash every six months. To ensure that your pillows are consistently in their best, consider washing them "at least every three months—or four times a year," says Sansoni. As for pillowcases, wash them with your bedding, which should be a weekly cleaning routine.

What happens if you don't wash pillows?

1. Dirt And Oil Can Build Up. While your pillowcase may look clean at first glance, there's actually all sorts of tiny but nefarious things going on. "Not washing your pillowcase regularly results in a build-up of many things including oil, dirt, dead skin cells, and even breakout-causing bacteria," Axe says.

Why do pillows turn yellow?

Pillows turn yellow because of sweat. There are other reasons why a pillow may start to turn yellow including falling asleep with wet hair, lotions and oils on the skin, and moisture. When moisture or sweat remains on the pillow for long periods of time, the pillow will turn yellow.