Can Pillows Be Washed? A Complete Guide by Pillow Type

Most people wash their pillowcases regularly but rarely think about the pillow inside. By the time a pillow is visibly stained or noticeably smells, it has accumulated months of sweat, skin oils, dead skin cells, and dust mites. The good news: yes, pillows can be washed, and for most common fill types, the process is easier than people expect. The key is knowing which method to use for each type.

This guide covers all the main pillow fill types available in Canada, from polyester and down to memory foam and latex, with clear instructions on how to clean each one. Where machine washing is appropriate, we cover the right settings. Where it is not, we cover the alternatives that actually work.

The Short Answer: It Depends on the Fill Type

Pillow Fill	Can Be Washed?	Best Method	Dry Cleaning Needed?
Polyester / Fibrefill	Yes	Machine wash, gentle cycle	No
Down	Yes	Machine wash, gentle cycle	Sometimes (check label)
Feather / Feather-Down	Yes	Machine wash, gentle cycle	Sometimes (check label)
Memory Foam	Spot clean only	Damp cloth, air dry	No
Shredded Memory Foam	Cover only	Spot clean fill; wash cover	No
Latex (solid)	Spot clean only	Damp cloth, air dry	No
Buckwheat Hull	Cover only	Remove hulls, wash cover	No
Kapok	Sometimes	Gentle hand wash or spot clean	Sometimes
Microbead	No	Spot clean only	No

Polyester and Fibrefill Pillows

Polyester fibrefill is the most common pillow fill in Canada and the easiest to wash. These pillows are fully machine washable and handle washing well even on a regular cycle. Use warm water and a gentle or regular cycle. Avoid hot water, which can cause the fill to matt and lose its resilience. A small amount of liquid detergent is sufficient; powder detergent can leave a residue that makes the fill feel stiff after drying.

Wash two polyester pillows at a time to balance the machine load. After washing, transfer them to the dryer on low to medium heat with a couple of dryer balls. Polyester pillows dry in one to two cycles of 45 to 60 minutes each. They should feel light, resilient, and uniformly warm when dry. If they feel lumpy or dense, run another dryer cycle and break up the fill by hand between cycles.

Polyester pillows can be washed every one to two months if you do not use a pillow protector, or every three to four months with one. They are among the most affordable pillows to buy and replace, so if they do not recover their shape after washing, replacing them is a practical and inexpensive option.

Down Pillows

Down pillows are machine washable, but the drying process requires care. Down fill consists of fluffy clusters from waterfowl, and when wet, these clusters mat together into dense lumps that must be broken up gradually during drying. If you rush this step, the pillow ends up with permanent lumps that cannot be fixed after the fact.

Wash down pillows on a gentle cycle with cool to warm water and a very small amount of mild liquid detergent, roughly half the quantity you would use for a regular wash load. An extra rinse cycle is strongly recommended. Down absorbs detergent easily and holds onto it if not rinsed completely, which results in a stale smell that is difficult to eliminate even after the pillow is dry.

Dry on low heat with wool dryer balls in the drum. Expect two to three dryer cycles. After each cycle, take the pillow out and massage it to break up clumps, then squeeze it firmly in multiple spots to check for damp patches. Return it to the dryer until it is completely dry throughout the fill, including the centre. A damp centre leads to mould growth inside the pillow.

If you want a deeper look at the full process for down and feather fills, our article on washing down pillows goes through each step in detail including how to deal with the natural wet-down smell.

Feather and Feather-Down Blend Pillows

Feather pillows and feather-down blends follow the same washing process as pure down, with one advantage: feather quills provide more structure to the fill, which means it clumps less severely during washing and drying. The washing steps are identical: gentle cycle, cool or warm water, mild liquid detergent, extra rinse cycle.

Drying feather pillows still requires patience. Use low heat with dryer balls and plan for multiple cycles. The wet-feather smell that develops during washing is normal and disappears completely once the pillow is dry. If the smell persists after drying, the pillow is not yet fully dry or did not get an adequate rinse. Our guide to whether feather pillows can be washed covers this in full.

Memory Foam Pillows

Memory foam pillows cannot be washed in a washing machine. The mechanical agitation during the wash cycle tears the foam at a microscopic level, destroying the cell structure that gives memory foam its pressure-relieving and contouring properties. A machine-washed memory foam pillow will be noticeably different in feel after a single wash cycle, often becoming either too dense or developing flat areas where the foam has collapsed.

The same applies to the dryer. Memory foam cannot withstand dryer heat; the foam degrades and may off-gas compounds during the heating process.

To clean a memory foam pillow, spot clean the surface area with a cloth dampened in cool water and a tiny amount of mild liquid soap. Blot rather than scrub. For a full surface refresh, mix a small amount of detergent in water, dampen a cloth, and wipe the entire pillow surface gently. Then wipe again with a clean cloth dampened in plain water to remove the soap. Stand the pillow on its edge in a well-ventilated room and allow it to air dry completely, which can take several hours. Do not use the pillow before it is fully dry.

The removable cover that many memory foam pillows come with can be machine washed according to its own care label. Remove the cover before cleaning the foam insert.

Shredded Memory Foam Pillows

Shredded memory foam pillows (those with small foam pieces rather than a single solid block) are partially more washable than solid foam pillows, but the approach is similar. The outer cover can typically be machine washed on a gentle cycle. The foam fill itself should be spot cleaned rather than immersed in water. Washing shredded foam in a machine can cause the pieces to clump and permanently alter the feel of the pillow.

Some shredded foam pillows come with care labels that permit gentle hand washing of the fill in a sink. If this is indicated, handle the fill gently, squeeze out water rather than wringing, and dry the fill spread in a thin layer on a clean surface in a warm, well-ventilated area. This can take 24 to 48 hours to dry completely.

Latex Pillows

Solid latex pillows should not be submerged in water or washed by machine. Water gradually degrades latex, and prolonged exposure weakens the material, causing it to crack or crumble over time. Spot cleaning is the correct approach: use a damp cloth with a small amount of mild soap, wipe the soiled area, wipe again with a plain damp cloth, and air dry.

Natural latex is particularly sensitive to sunlight and should not be dried in direct sun for extended periods. Synthetic latex is more stable but still benefits from air drying in a shaded, ventilated space.

The fabric cover of a latex pillow is usually machine washable on a gentle cycle. Wash the cover separately from the foam insert and allow both to dry completely before reassembling.

Pillows That Cannot Be Washed

A few pillow types cannot be cleaned by any washing method at home. Microbead pillows, for example, contain thousands of tiny polystyrene beads that can damage washing machine pumps and drainage systems. These pillows should be spot cleaned on the surface only.

Some high-end down and feather pillows with delicate outer covers specify dry cleaning only on their care labels. This instruction exists because the cover fabric may shrink or lose its finish in water. Do not attempt to home wash a pillow that specifies dry cleaning, regardless of the fill type.

When Pillows Need Dry Cleaning

Dry cleaning is appropriate for pillows whose care label specifies it, and for situations where the outer cover is made from a fabric that cannot be safely wet, such as raw silk, certain brocades, or hand-embroidered decorative fabrics. Most sleeping pillows, including down and feather, can be machine washed at home. Dry cleaning is rarely necessary for standard sleeping pillows and is more commonly relevant to decorative and accent pillows.

If a down or feather pillow that is otherwise machine washable has been heavily stained in a way that spot treatment and a machine wash cycle have not resolved, a professional textile cleaner may be able to remove the stain more effectively. This is worth considering for a high-quality down pillow that still has years of useful life left in it.

Washing Pillow Covers and Protectors

Pillow covers (decorative cases) and pillow protectors should be washed far more frequently than the pillows themselves. Covers and cases collect sweat and oil from the scalp and face every night. Washing them every one to two weeks is appropriate for most households.

Protectors sit between the case and the pillow ticking and act as a barrier. Wash protectors every two to four weeks. They wash easily in a warm cycle with regular detergent and dry quickly in a dryer or on a rack. Keeping protectors clean dramatically reduces how often the pillow itself needs to be washed, which extends the life of the pillow fill.

The Fold Test: Is Your Pillow Worth Washing?

Before washing a pillow, it is worth checking whether washing will actually restore its usefulness. For polyester and down pillows, the fold test is a reliable indicator. Fold the pillow in half lengthwise and release it. A pillow in good condition springs back to its original shape quickly, within two to three seconds. A pillow that stays folded or returns to shape very slowly has lost its structural integrity and should be replaced rather than washed.

For memory foam and latex pillows, look for visible damage: tearing, cracking, collapsed areas, or a permanent indentation where your head rests. These pillows do not recover from structural damage through cleaning.

Our article on how often pillows should be replaced gives timelines for each fill type and explains the relationship between pillow age and sleep quality. If your pillow is more than two to three years old and fails the fold test, a new one will do more for your sleep than any cleaning method.

Washing Frequency by Pillow Type

Pillow Type	Without Protector	With Protector
Polyester	Every 1-3 months	Every 3-4 months
Down / Feather	Every 3-4 months	Every 4-6 months
Memory Foam	Spot clean as needed	Spot clean as needed
Latex	Spot clean as needed	Spot clean as needed
Buckwheat	Cover: every 2-3 months	Cover: every 3-4 months

Why Pillow Hygiene Matters for Sleep Quality

A pillow accumulates approximately half a litre of sweat per night from the average adult. Over weeks and months, this moisture, combined with body oils and skin cells, creates conditions favourable for dust mite reproduction. Dust mites are a leading trigger for nighttime allergy symptoms including congestion, sneezing, and eye irritation that disrupt sleep.

Regular washing reduces dust mite populations and removes the accumulated allergens from the fill. Research published in the journal Allergy found that regular hot washing of bedding reduced dust mite allergen levels by over 95%. While most pillow fills benefit from warm rather than hot washing, the reduction in allergen load from any thorough cleaning is substantial.

Pairing clean pillows with a clean mattress has a compounding benefit. If you are washing pillows regularly but not addressing the mattress surface, a significant allergen source remains. Our guide to mattress care and cleaning covers how to address the mattress as part of a complete sleep hygiene routine.

Citations

1. American Cleaning Institute. Pillow Care and Laundering Guidelines. cleaninginstitute.org
2. Platts-Mills T, et al. "Dust mite allergen and asthma." Allergy. 1997.
3. National Sleep Foundation. Pillow Hygiene. sleepfoundation.org
4. Health Canada. Indoor Allergens and Respiratory Health. canada.ca
5. Asthma Canada. Allergen-Reduction Strategies for the Bedroom. asthma.ca

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