How to Wash and Whiten Yellowed Pillows

One of the most common reasons why pillows can turn yellow is sweat. Even when you’re sleeping, your body continues to sweat in order to stay at a comfortable temperature. Depending on the type of fabric your pillowcase is made from, sweat can seep through the fabric. As the sweat dries, it can leave a yellow stain on the pillow. Even if one uses pillow covers underneath the pillow cases, the yellowing can still occur.