The cleaning process depends on the pillow you purchase. That is why it is important to read the instruction manual and follow the guidelines given there. You can only maximize the product's longevity and performance by sticking to the instructions. The majority of pillows are suitable to wash in a washing machine. However, some units only have a machine-friendly outer case, which is something you should keep in mind. You will probably have to use a gentle cycle. When it comes to drying, it is recommended to place the pillow in a dry area, and give it some time to dry naturally.