How to Wash Any Pillow: The Complete Care Guide

By Maya Ellis 6 min read

Almost any pillow can be washed — the trick is matching the method to what's inside. Down and synthetic pillows usually go straight in the washing machine. Memory foam and latex should be spot-cleaned and aired out, never put through a wash cycle. This guide walks you through how to clean every common type of pillow safely, how to dry it so it doesn't go lumpy or musty, and how to keep it fresh between deep cleans.

Key takeaways

Washing methods depend on your pillow's fill across 4 main categories—down, synthetic fiber, memory foam, and latex—plus strict water-temperature limits:

Check the care label first. It overrides every general rule below.
Down, feather, and synthetic (polyester) pillows are usually machine-washable on a gentle, warm cycle.
Memory foam and latex pillows can't be machine-washed — water and spinning break down the foam. Spot-clean and air them instead.
Heat is what sanitizes. Washing or drying at 130°F (54°C) or above is what kills dust mites, not the detergent.
Dry it completely. A pillow that's even slightly damp inside can grow mildew and smell.

Can you wash every type of pillow?

Not the same way. The filling decides the method, so the safest first step is always to read the care tag. Across the 4 main pillow fills, here is the general map:

Pillow type	Machine wash?	How to dry	Wash how often
Synthetic / polyester	Yes — gentle, warm	Low heat + dryer balls	Every 3–4 months
Down / feather	Usually — gentle, mild detergent	Low or air, dryer balls	Every 3–4 months
Memory foam	No — spot-clean only	Air-dry fully	Spot-clean as needed
Latex	No — spot-clean only	Air-dry, out of direct sun	Spot-clean as needed
Washable-by-design (like Pillowash)	Yes — follow brand temps	Per brand guidance	As needed

If you only remember one thing: foam doesn't go in the machine. Everything else usually does, with care.

How to wash a pillow in the washing machine

For down and synthetic pillows (2 machine-washable fills), the machine is the easy route (here's the full step-by-step guide to machine-washing a pillow):

Remove the case and any protector, and check the seams for rips before you start.
Wash two pillows at once to keep the drum balanced (or add a couple of towels if you only have one).
Use a gentle cycle and warm water — the warmest the care label allows. To target dust mites, that's 130°F (54°C) or hotter.
Use about a tablespoon of mild detergent. Too much leaves residue that's hard to rinse out of thick filling.
Add an extra rinse to flush out every bit of soap.

How to clean a memory foam or latex pillow

Solid foam and latex can't take a machine cycle, so follow these 4 hand-care steps:

Spot-clean stains with a cloth dampened in a little mild soap and water; blot, don't soak.
Vacuum the surface with an upholstery attachment to lift dust and dead skin.
Air it out in a breezy spot — out of direct sunlight, which can yellow and crumble foam over time.

How to dry a pillow so it doesn't go lumpy or musty

Drying is where most pillows get ruined. Moisture trapped past 24 hours invites mildew and odor.

Synthetic and down: tumble on low or air-dry, and toss in a couple of wool dryer balls to break up clumps and speed things along.
Skip high heat — it can melt synthetic fill and damage feathers.
Check every 20–30 minutes and fluff by hand.
Make sure it's bone-dry before it goes back on the bed. If the center still feels cool or heavy, keep going. (More detail in our guide to putting a pillow in the dryer.)

How often should you actually wash your pillow?

A good rule is every 3 to 4 months — at least twice a year — with the pillowcase washed weekly.

Pillows quietly collect sweat, oils, and the roughly 1.5 grams of dead skin we each shed every day, which is what dust mites feed on. The Asthma and Allergy Foundation of America (AAFA) also recommends replacing most pillows about every two years. We go deeper on timing in our guide to how often you should wash your pillow.

Already seeing discoloration? Here's why pillows turn yellow and how to fix it.

Common pillow-washing mistakes to avoid

Avoid these 5 laundry-room errors that cause clumped fill, torn foam cells, and trapped dampness inside freshly washed pillows:

Putting memory foam in the machine — the single fastest way to wreck a pillow (here's what's actually safe for memory foam).
Using too much detergent, which leaves residue inside thick fill.
Pulling it out while still damp — the cause of that musty smell.
Drying on high heat, which can clump or melt the filling.
Skipping the care label because you assume all pillows wash the same. They don't.

The easy way: a pillow built to be washed

Most pillows make washing a gamble — foam you can't clean, or fill that clumps after 1 dryer cycle.

The Pillowash Crisp Washable Pillow is designed around the opposite idea. Its Clean-Deep™ construction lets you machine-wash the whole pillow without ruining it: the core sits inside an inner cover and goes in the wash together, while the outer cover washes separately. That means a thorough deep clean on a normal schedule — no spot-cleaning workarounds, no guessing. See how the Pillowash Crisp pillow is built to wash.

Frequently asked questions

Can you wash pillows in the washing machine?

Most down, feather, and synthetic pillows can be machine-washed on a gentle, warm cycle. Memory foam and latex pillows cannot — water and spinning break down the foam, so those should be spot-cleaned and aired out instead. Always check the care label first.

What temperature kills dust mites in pillows?

Heat of 130°F (54°C) or higher is what kills dust mites, whether in the wash or the dryer. It's the temperature that does the work, not the detergent. If your pillow can't take hot water, a hot dryer cycle can achieve the same effect. See our full guide to what temperature kills dust mites.

How do I dry a pillow without it going lumpy?

Dry on low or air-dry with a couple of wool dryer balls to break up clumps, check and fluff every 20–30 minutes, and make sure the center is completely dry before using it again. Skip high heat, which can damage the filling.

How often should I replace my pillow?

The AAFA suggests replacing most pillows about every two years. If yours stays flat after fluffing, or folds in half and doesn't spring back, it's lost its support and is due for a replacement.

Compare care rules across all 4 pillow filling types below, test your current pillow with our 30-second Pillow Health Check, read the Pillowash Care FAQ, or shop the 3-layer Pillowash Crisp Washable Pillow: