What is the healthiest way to dry clothes?

The healthiest way to dry clothes is to air dry them outdoors in sunlight with good air circulation, because it avoids chemicals, preserves fabric, and naturally sanitizes. Sunlight contains ultraviolet light that helps kill bacteria, dust mites, and some mold spores, and it naturally bleaches and freshens whites without needing chemical additives. Air drying outdoors also avoids the indoor humidity problems caused by drying clothes inside, which can raise indoor humidity above 60 percent and promote mold growth, dust mites, and respiratory irritation, especially if you dry in a bedroom. If outdoor drying is not possible, the next healthiest option is to air dry indoors in a well-ventilated room with windows open, a fan running, and a dehumidifier to keep humidity below 50 percent, which prevents musty odors and mold. Avoid overusing scented dryer sheets and liquid fabric softeners that can leave chemical residues and trigger skin allergies, and instead use fragrance-free detergent and wool dryer balls if you use a machine dryer. For machine drying, clean the lint filter after every load to prevent dust circulation and fire hazards, and avoid high heat that can break down elastic and release microfibers. If you have allergies, drying clothes in a dryer on medium heat can actually help remove pollen that sticks to clothes dried outside during high pollen seasons. Overall, combining outdoor sun drying when possible with proper ventilation indoors is healthiest for both you and your clothes.