Sunlight as a Natural Disinfectant

One of the benefits of drying clothes outside is the natural disinfecting effect of sunlight, particularly due to ultraviolet (UV) rays. UV rays have been proven to have antimicrobial properties, capable of killing or deactivating bacteria, viruses, and fungi. Research conducted by institutions like the World Health Organization (WHO) and the Centers for Disease Control and Prevention (CDC) has shown that UV light can effectively reduce microbial contamination on surfaces, including fabric. For example, a study published in the Journal of Hospital Infection found that UV light could kill 99.9% of bacteria on surfaces.
While line drying in the sun doesn’t replace proper washing, the exposure to UV rays can provide an extra layer of cleanliness, particularly for items like towels, bedding, and activewear that tend to retain moisture and harbor bacteria. This natural disinfectant effect is especially beneficial for families with young children or individuals with sensitive skin, as it reduces the need for harsh chemical disinfectants commonly used in laundry detergents. Sunlight can also reduce the risk of skin irritation caused by chemicals in fabric softeners.
For those who want to keep their laundry routine more eco-friendly and chemical-free, line drying offers an added benefit that goes beyond fresh air and scent.