How often do girls change their underwear?

It is recommended to change underwear every 3-6 months and change a pair of clean underwear every day. If sweating and dampness are obvious, it is recommended to change underwear twice a day. If the underwear is deformed, the material becomes dry and hard, or the stain cannot be washed clean, it is best to throw it away in time. Because underwear is easy to be contaminated with human urine, feces and other secretions, it is easy to breed bacteria and cause inflammation between men and women, so try to change underwear every day. Correct cleaning methods Method 1: It is recommended to use professional underwear cleaner. Soak in warm water of about 30 degrees for about 10 minutes, and then rub gently with your hands. Don't push too hard. Cloth can't be taken ~ This washing method can thoroughly clean underwear, but it is not good for stubborn stains. Method 2: bleach cleaning. It can really remove yellow stains and effectively sterilize. But it can only be used for light underwear. If it is dark underwear, it will fade directly. Method 3: Wash after boiling hot water. This method can kill bacteria through high temperature, but it is more troublesome. Especially for office workers, it takes almost half an hour to go home every day, just like fighting, burning underwear and washing underwear. Method 4: soak in warm water at 40℃ for 10- 15 minutes, then scrub with underwear cleaner, and then dry in natural sunlight. Unlike underwear, underwear needs to be exposed to the sun. Ultraviolet rays can kill bacteria completely.