1. Take off the pillowcase. If the pillow is covered with a protective cover (a zippered and padded pillowcase), take off.

2. Check the pillow for any holes or cracks. Remember to check the stitching. If there are holes or cracks, sew them.

3. Place two pillows in the washing machine to ensure uniform weight distribution in the washing machine. [1] If you can't put the pillow into the tub, first squeeze out the air inside the pillow. [2] Try not to use a pulsator washing machine, because turning the washing wheel may break the pillow. If there is no drum washing machine at home, consider the laundromat. There should be a drum-type washing machine for you to use.

If only the pulsator washing machine is available, place the pillow upright and do not hang it horizontally. This way the pillow will not be entangled in the pulsator.

4. Pour the low foaming detergent into the detergent box. The amount of detergent used is less than usual, so that they do not accumulate and remain on the pillow. Try to use laundry detergent instead of detergent. Washing powder is more likely to accumulate and remain, irritating the skin and causing allergies. The pillow is large and difficult to rinse. The detergent is used less, the residue is small, and it does not need to be rinsed too many times.

5. Set the washing machine to a "soft wash" program. Try to use hot water as much as possible to help kill dust mites that may be hidden in the pillow. However, hot water may also damage the down. If you are worried about this, you can use warm or cold water.

6. Consider running the rinsing and dehydration process multiple times to remove residual detergent and excess water.