Is it okay if I wear the wrong washed underwear?

Wearing incorrectly washed underwear usually does not cause serious problems, but it may lead to skin irritation or risk of infection due to hygiene hazards. Mixed wearing of underwear mainly involves three factors: cleanliness, material differences and personal health status.

If washed underwear is worn with others, bacteria or fungi may remain due to incomplete washing. Sharing laundry detergent and softener may also cause allergic reactions, which may manifest as itching or redness in the perineum. The risk of mixing cotton underwear is low, but chemical fiber materials may aggravate skin sensitivity due to friction. The risk of mixing between family members is lower than that of strangers, but there is still a chance of cross-infection. For example, the underwear of a patient with tinea pedis may spread Trichophyton rubrum.

Under special circumstances, if underwear has obvious stains or mildew spots, wearing it together may cause urethritis or vulvitis. People with low immune systems are more susceptible to infection and may experience symptoms such as frequent urination and burning pain. The underwear of patients with gynecological diseases may carry Candida, and men wearing the wrong underwear may cause balanitis. The risk of wearing mixed underwear during menstruation is higher, and blood residue may spread blood-borne pathogens such as hepatitis B.

It is recommended to wash and dry underwear separately and avoid using public washing machines to process intimate clothing. Newly purchased underwear should be sterilized by high temperature before wearing. If there is any skin damage, personal clothing must be strictly separated. When symptoms such as persistent itching and rash occur, you should seek medical treatment promptly and stop wearing clothes. You can choose light-colored pure cotton underwear for daily use to facilitate observation of cleanliness. When washing, use hot water above 60°C to help sterilize.