Roll Pillows Tightly and Secure With Rubber Bands Before Washing
Your pillow is probably disgusting, which means it’s time to wash it well. For this, Apartment Therapy offers to roll tight and secure with an elastic band.
Basically, you want to minimize the chances of synthetic fiber clumping. So, roll the pillow lengthwise, then secure the ends and the middle with rubber bands and toss it into the washing machine with liquid detergent. When done, lay it down to dry.
How to wash your pillows | Apartment therapy