Memory foam pillows are made from polyurethane and cannot be washed. Memory foam pillows are not made for the washer or dryer and must not come into contact with liquid.
When memory foam pillows need refreshing, there are several ways to do so without compromising the integrity of the foam. If liquid comes into contact with the memory foam pillow, blot the pillow with tissues and allow the pillow to air dry. Use a wash cloth with cold water and dish soap to blot out any surface stains on the pillows. Before applying the cloth to the pillow, wring out the cloth so that it is just barely damp.
Mrs. Clean recommends sprinkling baking soda on memory foam pillows to remove odors without getting the pillows wet. After sprinkling the baking soda on the pillows, allow them to sit for two days, and then vacuum off the baking soda.