Wash your reusable face mask every day or whenever it gets dirty. You can wash your face mask with a washing machine or by hand. When using a washing machine, you can include your mask with your regular laundry. Check the fabric label for the appropriate washing machine settings. When handwashing, use tap water and laundry detergent or soap. Dry your mask in a warm or hot dryer. Otherwise, you can hang your mask under direct sunlight or lay it flat to let it dry.