These Halloween Experiments sweatshirts are super easy to use. Just put them on and enjoy the spooky style. When it's time to clean, machine wash them cold and turn them inside out to protect the design. Wash with like colors to prevent color bleeding. Only use non - chlorine bleach if really needed. After washing, you can hang them to dry for the best results, but if you're in a hurry, you can tumble dry on a cool or low - heat setting. Don't use fabric softener as it might fade the colors. Also, stay away from ironing and dry cleaning to keep the sweatshirt in great shape.