How Often Should You Change Your Bedsheets changing your bed sheets regularly is essential for maintaining cleanliness and hygiene. Most experts recommend changing them once a week, especially if you sweat heavily during sleep or if you're prone to allergies or skin conditions. However, if you don't sweat much at night or use a mattress protector, you can extend the time between washes to every two weeks. Changing your sheets frequently helps prevent the buildup of dirt, oils, dead skin cells, and allergens like dust mites, which can cause discomfort or trigger allergic reactions. Keeping your sheets clean not only contributes to better sleep quality but also promotes overall health and well-being.