Put one or two pillows in your washing machine. Select the "gentle wash" or "delicate" cycle.
Pour in a cap full of liquid laundry detergent. Add several drops of bleach and two sheets of fabric softener.
Run the pillow through the rinse cycle at least twice. This removes detergent residue.
Run the spin dry function about three times to thoroughly remove water from the pillow. Put the pillow in the dryer if its care tag suggests you do this. You cannot put all types of pillows in the dryer; air dry such types instead.
Open the dryer midway through the drying cycle. Remove the pillow and fluff it to help it retain its shape. Put the pillow back in and continue drying. Fluff the pillow again as many times as you want.
Put the pillow through a second drying cycle to get it completely dry. Large pillows may even need a third drying cycle.