Start by checking the care label on the pillow. Most synthetic and cotton-filled pillows can go in a washing machine, but memory foam and some specialty fills cannot (they require spot cleaning instead).
If machine-washable, wash two pillows at a time to keep the load balanced. Use warm water and a mild liquid detergent. For whitening and odor removal, add a small amount of oxygen-based bleach (not chlorine bleach for most pillows, since it can damage fibers). If you want a natural boost, half a cup of baking soda in the wash helps remove smells, and a splash of white vinegar in the rinse cycle can soften and deodorize.
Run an extra rinse cycle if possible. Leftover detergent is a common reason pillows feel stiff or smell odd later.
Drying is the most important part. Tumble dry on low heat with clean tennis balls or dryer balls to keep the filling fluffy and prevent clumping. If you’re air-drying, place them in strong sunlight and flip them regularly—sunlight helps naturally whiten fabric and kill odor-causing bacteria.
Before putting pillowcases back on, make sure the pillows are completely dry inside. Even slight dampness can lead to mildew and bad smells.
If pillows are still yellowed after washing, repeating the process with oxygen bleach usually helps over time rather than relying on harsh chlorine bleach.
If you want, tell me what type of pillows you have (fiber, feather, memory foam), and I can tailor the exact method so you don’t risk damaging them.
