Take the pillow from the washing machine and place it into the dryer.
Put two or three tennis balls or a pair of clean tennis shoes in the dryer with the pillow.
Turn on the dryer on a high-heat setting for approximately one hour. Stop the dryer after approximately 30 minutes and fluff it with your hands. Replace it in the dryer and take it out after another 30 minutes. Fluff it with your hands. If it's dry, leave it out. If not, put it back in the dryer on high heat for an additional 10 to 15 minutes.