It might not amount to much in one night, but over time it can build up and eventually cause yellow staining. You're probably not even aware of it but most us sweat a little in the night, and this can wick through your pillowcase and on to your pillow.

There are a few possible causes behind yellow stains on a pillow, but the most likely culprit is sweat. And if you're more interested in getting rid of the stains than understanding how they happened (we can't say we blame you), head instead to our expert feature on how to wash a pillow and how often. Let's not get ahead of ourselves, though, because we're sure you want to know all the details about what causes those yellow stains on your pillows, and what you can do about them. Bottom line: if you've had your pillow for more than a couple of years it's almost certainly past its best, and if it's covered in horrible yellow or brown patches as well, that's a sure sign that it's time for a sparkling new one fortunately our best pillows guide can point you right at the best options available now. We're here to spill all the info on what's making your pillows turn yellow, as well as to explain how you can tell whether your pillow's a healthy sleep surface.

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