You should change your bed sheets about once a week to maintain good hygiene and comfort. Experts recommend washing or changing sheets weekly because sheets accumulate sweat, skin flakes, bodily oils, dust mites, and pet hair, all of which can affect cleanliness and sleep quality
. If you have allergies, asthma, night sweats, or sleep with pets, washing sheets more frequently—up to twice a week—is advisable to reduce irritants and keep your sleeping environment fresh
. During warmer months, weekly laundering is also recommended to manage sweat and maintain freshness
. While the ideal frequency is weekly, many people change their sheets less often, typically every two to three weeks or even longer, but this is not optimal for hygiene and skin health
. Changing sheets less often can lead to skin irritation, allergies, and a less comfortable sleep environment
. In summary:
- Recommended: Change sheets once a week.
- More often if: You have allergies, sweat a lot, have pets in bed, or during hot weather (up to twice a week).
- Less often: Every two weeks may be acceptable for some, but not ideal.
- Other bedding: Wash pillowcases and duvet covers on the same schedule.
This routine helps keep your bed clean, comfortable, and healthy for better sleep
