Experts say changing your underwear at least once a day is a basic hygiene habit. Because underwear sits directly against the skin, it collects sweat, oils, and natural discharge throughout the day. This moisture can create an environment where bacteria grow, potentially causing odor, irritation, and discomfort.

For most people, one clean pair every 24 hours is enough, but some situations call for more frequent changes. If you exercise, sweat heavily, or experience increased discharge, changing into fresh underwear sooner can help keep the skin dry and comfortable. After a workout, it is best to change as soon as possible. During menstruation, changing more than once a day may also help reduce irritation.

The type of underwear matters, too. Breathable fabrics such as cotton can improve airflow and reduce moisture, while synthetic materials may trap heat and sweat. Tight underwear worn for long periods can also increase friction and discomfort, so looser, breathable styles may be preferable.

Washing underwear properly is another important part of hygiene. Use a mild, fragrance-free detergent and make sure each pair is thoroughly cleaned and completely dried before wearing it again. This helps remove bacteria, sweat, and substances that may irritate sensitive skin.

The simplest rule is consistency: change daily and adjust your routine when needed. As the article puts it, “Small habits like this can make a noticeable difference in skin and intimate health.” Staying clean, dry, and comfortable is usually more important than following a complicated routine.