How Often Should You Wash Your Sheets? A Simple Bedding Laundry Guide

For people with dust mite allergies, exposure can trigger:
• Sneezing
• A runny or stuffy nose
• Itchy or watery eyes
• Coughing
• Wheezing
• Worsening asthma symptoms
If your symptoms are worse in the morning or when you make the bed, dust mites may be part of the reason. Regular washing helps reduce allergens, although it won’t remove every mite hiding inside a mattress or pillow.
What Temperature Should You Wash Sheets At?
Temperature matters more than most people think — especially for dust mites.
A 2008 study tested washing sheets at different temperatures. At 30°C (86°F) and 40°C (104°F), only about 6.5% and 9.6% of dust mites were killed. At 60°C (140°F), all of them died. The good news: even the cooler washes removed most of the allergen from the fabric, because it dissolves in water. Allergy charities such as Allergy UK recommend 60°C for bedding when killing mites is the goal.
In practice:
• Cotton and linen sheets (white or colourfast): usually fine at 60°C. A hot wash also helps keep whites from turning grey.
• Coloured, bamboo, silk, microfibre or delicate bedding: follow the care label, usually 30–40°C. Water that’s too hot can shrink fabric, damage elastic or fade colours.
• Can’t wash hot? Wash regularly at the label temperature, then tumble dry on a hot setting if the label allows, or use allergen-barrier covers that can go in at 60°C.
Always check the care label first. A shrunken duvet cover isn’t worth it.
How Often Should You Wash Your Bedding?
For most households, washing sheets and pillowcases once a week is a practical routine. It removes the sweat, oil, skin cells and dirt that build up before they turn into odours, stains or an allergen problem.
Wash more often (every 3–4 days) if:
• You sweat heavily at night or it’s hot weather
• Someone in the household is sick
• You have allergies or asthma triggered by dust mites
• You sleep with pets
• You’re dealing with a skin infection or acne
• You go to bed without showering, or wear makeup or skincare products to bed
• Your sheets look dirty or smell unpleasant
Pillowcases deserve special attention because they sit right against your face, hair and nose.
Bedding Washing Schedule (Cheat Sheet)
Not every item needs the same schedule. Use this as a simple guide:
Bedding item
How often to wash
Bed sheets
Once a week
Pillowcases
Once a week, or every 2–3 days if you have acne-prone skin or allergies
Duvet covers
About once a week
Blankets and throws
Every 2–4 weeks, depending on use
Comforters and duvets (inserts)
Every few months, or as the care label says
Pillows (inserts)
Every 3–6 months, if washable
Mattress protectors
About once a month, or as the manufacturer says
These are general guidelines, not strict rules. If bedding gets dirty, sweaty or contaminated, wash it sooner.
How to Keep Your Bedding Fresh Between Washes
A clean bed doesn’t mean doing laundry every day. These habits help between wash days:
1. Dry bedding completely. Moisture left in sheets and blankets causes musty smells. Dry everything thoroughly before putting it back on the bed.
2. Air out your bed. Instead of making the bed straight away, pull back the duvet for 20–30 minutes after you wake up so moisture can escape. Dust mites prefer humid conditions.
3. Use washable mattress and pillow protectors. They add a barrier between you and the mattress or pillow, and they’re much easier to wash.
4. Shower before bed. Going to bed clean means less sweat, oil and product on your sheets.
5. Keep a second set of sheets. Rotating two sets makes weekly changes faster — no waiting for the dryer.
6. Don’t forget decorative pillows. Check whether their covers can be removed and washed.
7. Mind your pets. If your dog or cat sleeps on your bed, wash bedding more often.
8. Don’t overload the washing machine. Bedding needs room to move so water and detergent reach every part of the fabric.
Why You Shouldn’t Ignore That Stale Smell
Have you ever pulled sheets out of the linen closet and noticed a strange, stale smell?
That odour often means body oils, detergent residue or moisture stayed in the fabric. Folding sheets and putting them away doesn’t make them clean — bedding should be washed thoroughly and dried completely before storage.
If sheets still smell after washing:
• Use less detergent — too much leaves residue that traps odours
• Clean your washing machine (run an empty hot cycle and wipe the door seal)
• Avoid overloading the drum
• Make sure the bedding is fully dry before folding
• Store sheets in a dry, ventilated closet
Frequently Asked Questions
Is washing sheets once a week really necessary?
For most households, yes. Sheets collect sweat, body oils, dead skin cells and dirt every night. Weekly washing keeps your bed fresh and helps limit dust mite allergens.
What happens if I don’t wash my sheets for a month?
Sweat, oils, skin cells and dust mite allergens build up in the fabric, and the sheets may start to smell or look dingy. It won’t automatically make you ill, but it can worsen allergies or skin problems in sensitive people.
Can dirty sheets cause allergies or acne?
Dirty bedding can hold dust mite allergens that trigger sneezing, congestion and asthma symptoms in sensitive people. Oil and residue on pillowcases may also contribute to breakouts for people with acne-prone skin.
Should I wash my sheets in hot or cold water?
It depends on the fabric. Hot water (60°C / 140°F) kills dust mites and removes oily buildup best, but always follow the care label. Cooler washes still remove most allergens and dirt.
What temperature kills dust mites?
Research shows washing at 60°C (140°F) kills dust mites, while 30–40°C kills only around 10% of them.
How often should I wash my pillowcases?
Once a week is a good routine. Wash them every 2–3 days if you have oily or acne-prone skin, sweat heavily, or have allergy symptoms.
How often should I wash my pillows and duvet?
The pillow and duvet inserts themselves need washing much less often — roughly every few months — as long as you use covers and protectors that are washed regularly. Always check the care label.
Should I wash new sheets before using them?
Yes. New sheets can contain finishing chemicals, dust from storage and loose dye. A wash before first use makes them softer and cleaner.
Final Thoughts: Make Bedding Laundry a Weekly Habit
Washing bedding will never be the most exciting chore. Stripping the bed, waiting for several loads and fighting with the duvet cover can eat up a whole afternoon.
But clean bedding is worth it. Your sheets collect much more than you’d think while you sleep, and regular washing removes sweat, oils, dead skin cells and allergens.
For most people, washing sheets and pillowcases once a week is the simplest place to start. If you sweat heavily, have allergies, or someone at home is sick, wash them more often — and use 60°C when the fabric allows.
A fresh bed isn’t just about a tidy bedroom. It’s about a cleaner, more comfortable place to rest every night.