½ cup white vinegar (into the fabric softener compartment)
A small amount of liquid laundry detergent
Step 5: Wash on a warm, gentle cycle.
Step 6: Run an extra rinse cycle to remove any leftover detergent.
Step 7: Transfer the pillows to the dryer and add 3 clean tennis balls (or dryer balls) to help restore their fluffiness.
Step 8: Dry on low heat until the pillows are completely dry, then fluff them with your hands before placing them back on the bed.
How to Wash Pillows & Make Them Fluffy