Most pillows can be safely cleaned after COVID by machine washing on the hottest setting your pillow’s care label allows, then tumble drying on high heat. The good news: SARS-CoV-2 survives poorly on common pillow fabrics. On cotton and polyester, the virus becomes undetectable in less than a day, making the risk from a pillow that’s sat unused for even 24 hours already quite low. Still, a thorough wash eliminates any lingering concern and freshens bedding that absorbed days of sweat and congestion.
How Long the Virus Lasts on Pillow Fabrics
SARS-CoV-2 is an enveloped virus, meaning it’s wrapped in a fragile fatty layer that breaks down easily on absorbent surfaces. Research published in Advances in Virology found that infectious virus could not be recovered from cotton or polyester after the first day of contact. That’s a sharp contrast to hard, nonporous surfaces like plastic, where the virus survived up to five days in the same experiment.
The reason is moisture absorption. Porous fabrics wick liquid away from viral particles, which dehydrates and destroys them. If your pillow has been sitting untouched for a day or more since your last symptomatic night, the viral risk on the fabric surface is already negligible. Washing is still worthwhile for hygiene, since pillows collect bacteria, skin oils, and respiratory secretions during any illness.
What Detergent Actually Does to the Virus
Standard laundry detergent is surprisingly effective against SARS-CoV-2, even in cooler water. The active cleaning agents in detergent (surfactants) work by inserting themselves into the virus’s fatty outer membrane. At low concentrations they weaken and perforate it; at normal wash concentrations they tear it apart entirely, destroying the virus’s ability to infect cells. This mechanism works on any enveloped virus, which is why regular soap and detergent have been recommended throughout the pandemic. You do not need a specialty disinfectant for this purpose.
Machine-Washable Pillows: Step by Step
Most synthetic-fill, down, and down-alternative pillows are machine washable. Check the care label first, but here’s the general approach:
- Handle carefully. Don’t shake the pillow or hold it close to your face when stripping the bed. Carry it directly to the washing machine to avoid spreading any particles.
- Remove the pillowcase and any protector. Wash these separately or in the same load if there’s room. A crowded machine won’t clean effectively.
- Wash two pillows at a time to balance the drum. Use your regular detergent at the normal amount.
- Select the hottest water setting available. Health guidelines recommend 160°F (71°C) for at least 25 minutes to kill microorganisms in healthcare laundry. Most home water heaters top out around 120°F, which is fine when combined with detergent, since the surfactants handle the virus independently of temperature. Hotter water simply adds an extra layer of assurance.
- Run an extra rinse cycle to flush out detergent residue, which can make pillows feel stiff.
- Dry on high heat. Tumble dry until completely dry, which can take 60 to 90 minutes depending on the pillow’s fill. Toss in two clean tennis balls or dryer balls to break up clumps and restore loft. A pillow that stays damp inside can develop mold, so err on the side of extra drying time.
Cleaning Down and Feather Pillows
Down and feather fills are more delicate but absolutely washable. Research on feather materials shows that proper washing reduces bacterial contamination by roughly 100-fold compared to unwashed feathers, and removes the organic debris that microbes feed on. After washing, the microbial profile of the feathers closely resembled clean rinse water.
Use a gentle or delicate cycle with warm (not scalding) water and a mild detergent. Harsh detergents or bleach can strip the natural oils from down clusters, reducing their ability to loft back up. After washing, dry on low to medium heat with dryer balls. This is the step that matters most: down pillows can take two to three hours to dry completely. Pull the pillow out periodically, fluff it by hand, and check the center for dampness before you call it done.
Pillows You Can’t Machine Wash
Memory foam and latex pillows will break apart in a washing machine. For these, the simplest approach is time plus surface cleaning:
- Remove and wash the cover. The pillowcase and any zippered protector go in the machine on hot.
- Spot clean the foam. Mix a small amount of laundry detergent in warm water, dampen a cloth, and wipe down the surface. The surfactants in the detergent will inactivate any virus on contact.
- Let it air out. Place the pillow in a well-ventilated area, ideally near a sunny window. UV light from direct sunlight provides additional surface disinfection, though it won’t penetrate deep into thick foam.
- Wait at least 24 hours. Given that the virus dies on porous materials within a day, simply letting a foam pillow sit unused for a day or two while you use a spare is a practical and effective option.
Laundry Additives Worth Considering
Regular detergent alone is sufficient to destroy SARS-CoV-2, but if you want extra disinfection, a few options are available. The EPA’s List N, which catalogs products tested against the virus, includes hydrogen peroxide-based and quaternary ammonium-based laundry sanitizers approved for use on porous materials. These are added during the rinse cycle or as a presoak, depending on the product’s label instructions. Chlorine bleach also works but can damage colored fabrics and degrade natural fills like down. If you use bleach, reserve it for white synthetic pillows only.
For most people recovering at home, the combination of detergent and the hottest water your machine offers is more than adequate. The virus’s fragile lipid envelope simply doesn’t hold up against the mechanical action, surfactants, and heat of a normal wash cycle.
Washing Pillowcases, Protectors, and Sheets
Don’t stop at the pillows. Wash all bedding that was in contact with you during illness: sheets, blanket covers, pillowcases, and mattress protectors. The same rules apply. Hot water, regular detergent, and a full dryer cycle on high heat. If you were sharing a bed with someone, wash their bedding too as a precaution. Keep dirty laundry in a bag or basket rather than piling it on the floor, and wash your hands after loading the machine.
When to Replace Instead of Clean
If your pillow was already past its prime before you got sick, this is a reasonable time to replace it rather than clean it. Pillows that have lost their shape, feel lumpy after washing, or are more than two years old (for synthetic) or three to five years old (for down) may not recover well from an aggressive wash cycle. A fresh pillow eliminates any hygiene concern entirely and gives you a clean start post-illness.