What to do with underwear that has been worn for a long time

It is recommended to replace underwear that has been worn for a long time in time to avoid health effects due to material aging or bacterial growth. As underwear is a close-fitting garment, long-term use may cause fiber deformation, decreased breathability, and increase the risk of perineal infection.

Underwear usually needs to be replaced after 3-6 months of use. When underwear turns yellow, becomes hard, has weakened elasticity, or still smells after repeated washing, it indicates that its protective function has been significantly reduced. After frequent washing, the fiber structure of cotton underwear will gradually loosen, and the moisture absorption and perspiration ability will be weakened. Chemical fiber materials may accumulate static electricity or block ventilation holes, and humid environments are more likely to breed mold. Chemical residues left behind after some dyes fade may irritate the skin. High-temperature ironing or exposure to the sun during daily cleaning can delay bacterial growth, but it cannot fully restore fabric performance.

Old underwear can be cut and used as a cleaning rag to avoid direct contact with tableware or furniture surfaces. Pure cotton material is suitable for wiping glass or electronic products, while chemical fiber cloth can be used to clean oil stains. It must be thoroughly disinfected before donation, but most charities do not accept intimate clothing for recycling. Special materials such as silver ion antibacterial underwear must be classified as garbage before degrading. Styles containing metal fibers cannot be incinerated. If there are blood stains, secretion residues or skin allergies in the underwear, they should be sealed and discarded as medical waste.

When choosing new underwear, give priority to natural materials with good breathability, and wash them separately from other clothing on a daily basis. If itching or rash occurs on the perineum, you should immediately stop wearing old underwear and seek medical examination if necessary. Developing the habit of regular replacement will help maintain reproductive health. It is recommended to replace and clean it in time after exercise or in humid environments.