Each piece of clothing will be a bit different so be sure to follow tag instructions. Anything treated with a UPF protectant may lose its efficacy with frequent washing or harsh detergents. Many people choose to hand wash their shirts right after a run. As most of this UPF apparel is designed to dry quickly, their garment is clean, dry and ready to go by the next day. You can also wash your sun protective clothing in the washing machine most of the time, but you should always check the garment’s individual label as some can be damaged by going through the washing machine or tumble dryer. We definitely recommend air drying because any shrinking of the shirt can cause it to lose some of its breathability. For a detailed explanation of this please see our criteria section under the breathability heading.