How to Wash a Pillow in the Washing Machine (Without Ruining It)

Most bed pillows can go straight in the washing machine — wash two at a time on a gentle cycle with warm water and a little mild detergent, then dry them on low with dryer balls until there's no damp spot left inside. The catch is the fine print: the wrong fill, too much soap, or pulling a pillow out before it's bone-dry is what leaves you with lumps, a flat pancake, or a musty smell. This guide walks through how to do it right, by pillow type.

Key takeaways

Machine-washing a washable pillow takes 1 tablespoon of liquid detergent, a balanced 2-pillow load, a gentle spin cycle, and thorough low-heat drying:

• Check the care label first. Most down, down-alternative, and polyester pillows are machine-washable; most solid memory foam and latex are not.
• Wash two pillows at once so the drum stays balanced and they rinse evenly.
• Use a little mild detergent, skip the bleach, and add an extra rinse — leftover soap is the top cause of stiff, clumpy results.
• Hot water (130°F / 54°C) kills dust mites (per the Asthma and Allergy Foundation of America), but only use heat the care label allows.
• Dry low and dry completely. A pillow that's even slightly damp inside is how mildew and that sour smell start.

Can you wash a pillow in the washing machine?

Yes — most pillows can be machine-washed, and many should be, 2 times a year.

The Sleep Foundation notes that pillows collect sweat, body oils, dead skin, and dust-mite allergens over time, which is why regular washing (not just changing the pillowcase) matters. The exceptions are pillows that water ruins: solid memory foam and latex soak up water like a sponge, can tear in the drum, and dry slowly enough to grow mildew inside. Everything else — down, feather, down-alternative, polyester, and pillows built to be washed, like the Pillowash Crisp — does fine in the machine when you follow the care label. When a label says "spot clean only" or "dry clean," believe it.

What you need before you start

A few things make the difference between a clean pillow and a ruined one:

• A front-loading or large-capacity top-loader (ideally 3 cubic feet or larger); an agitator post on older top-loaders can be rough on pillows, so use the gentlest setting.
• Mild liquid detergent — about half what you'd use for a normal load. Liquid rinses out cleaner than powder.
• No chlorine bleach. It weakens fibers and can yellow synthetics over time.
• Two pillows (or one pillow plus a couple of towels) to balance the drum.
• Wool dryer balls or clean tennis balls for drying.

How to wash a pillow step by step

Follow this 6-step washing-machine routine to clean washable down and fiber pillows safely:

1. Remove cases and protectors and wash those separately on your normal sheets cycle.
2. Load two pillows side by side, front to back, so the machine stays balanced.
3. Add a small amount of mild liquid detergent — roughly a tablespoon for most loads.
4. Run a gentle or "bulky" cycle with warm water, unless the label says cold only. Warm-to-hot water cleans more thoroughly; the AAFA recommends 130°F (54°C) or hotter to kill dust mites, but only go that hot if the care label allows it.
5. Add a second rinse and an extra spin. Getting all the soap and water out is what keeps the fill soft instead of crusty.
6. Dry on low heat with two or three dryer balls, pausing to fluff and break up any clumps. Stop only when the center is completely dry — see the drying section below.

How to wash a pillow by type

Fill type changes everything across the 4 main pillow materials—here is the quick temperature and cycle reference:

Pillow type	Machine wash?	Notes
Down / feather	Yes, gentle	Mild detergent, low-heat dry with balls; takes longest to dry
Down-alternative / polyester	Yes	Standard gentle cycle; low-heat dry
Solid memory foam	No	Spot clean + air dry only; water and heat ruin it
Shredded memory foam	Sometimes	Check the label; some allow a gentle cold cycle, many don't
Latex	No	Spot clean only; never machine wash or tumble dry
Washable by design (e.g. Pillowash Crisp)	Yes	Built for full washing — see below

If your pillow is solid memory foam or latex and you bought it hoping to keep it thoroughly clean, that mismatch is worth knowing before your next purchase — it's the main reason people end up shopping for a pillow they can actually wash, instead of one they can only wash the cover of.

How to machine-wash a Pillowash Crisp Pillow

The Pillowash Crisp is built to be washed whole, not just on the surface, so the method is simpler than most.

The pillow has three layers — an outer cover, an inner cover, and the core. To wash it: leave the core inside the inner cover and put the two in the machine together; wash the outer cover separately, like a pillowcase. Use mild detergent, no bleach, and avoid washing it alongside anything with zippers or sharp edges. Keep the outer cover at or below 50°C (about 120°F), and the inner cover and core at up to 60°C for everyday washes (a deeper 80°C clean now and then is fine). The core can withstand higher heat for durability, but you never need boiling water to get it clean — gentler temperatures keep it lasting longer. Its open-channel Clean-Deep™ core rinses through and drains fast, which is what makes the whole thing practical to wash often.

How often should you wash your pillow?

Wash bed pillows about every 3 to 4 months, and more often — every 1 to 2 months — if you sweat heavily, sleep hot, or share the bed with pets.

Pillowcases are different: wash those weekly, since they sit against your skin and hair every night. Even with regular washing, pillows wear out; the Sleep Foundation suggests replacing most pillows every one to two years once the fill stops springing back. A washable pillow buys you cleaner sleep between replacements, but it doesn't last forever.

How to dry a pillow so it doesn't clump

Drying is where most pillows get ruined, so don't rush it. Tumble dry on low heat with two or three wool dryer balls or clean tennis balls, which keep the fill moving so it dries evenly instead of bunching into lumps.

Pause every 20–30 minutes to fluff it by hand and break up any clumps you feel. High heat is the enemy: it can scorch synthetics and melt foam, so keep it low even when it's tempting to speed things up. Before you put a case back on, press into the center and the thick corners — if there's any cool or heavy spot, it's still damp inside, and a damp pillow is exactly how mildew and that sour, musty smell get started.

Mistakes that ruin a pillow in the wash

Steer clear of these 5 machine-washing mistakes—from pouring 2x too much detergent to wringing wet fill—that ruin pillow loft:

• Washing one pillow alone — it throws the drum off balance and rinses unevenly. Always wash two.
• Too much detergent. Excess soap is nearly impossible to rinse out and leaves the fill stiff and clumpy. Use half what you'd use for clothes.
• Skipping the extra rinse. Trapped detergent is the hidden reason "clean" pillows feel crunchy.
• High-heat drying. It flattens fill and can damage foam.
• Calling it done too soon. The surface dries long before the core. If in doubt, dry it longer.

Frequently asked questions

Can you wash pillows in hot water?

You can if the care label allows it. Hot water at 130°F (54°C) or above kills dust mites, per the AAFA, but it can also shrink or damage some fills. Check the label, and when in doubt, use warm water plus a thorough dry on low heat.

How long does it take a pillow to dry?

It depends on the fill and method — down takes longest. Tumble drying on low is fastest; air-drying takes several hours to a full day. Whatever the method, don't stop until the center is completely dry.

Can I wash my pillow without a washing machine?

Yes. Hand-wash it in a clean tub with lukewarm water and a little mild detergent, press the water through gently (don't wring), rinse until the water runs clear, and air-dry it fully.

Why does my pillow turn yellow even after washing?

Yellowing comes from sweat and body oils soaking in over time. Washing removes most of it, but set-in stains may need pre-treating with a baking-soda paste or an oxygen-based whitener before the wash.

A pillow you can actually wash makes all of this easier. The Pillowash Crisp is built to go in the machine whole — core and covers — so keeping it clean is a normal laundry day, not a project. See how the Pillowash Crisp Pillow works →

Written by Maya Ellis. Maya writes about sleep hygiene and bedding care for Pillowash — every cleaning method here is one we've tested ourselves. Last updated June 2026.

Sources: Asthma and Allergy Foundation of America (dust-mite washing temperature); Sleep Foundation (pillow washing and replacement guidance).