First, check the label for your panties’ care instructions. Unless they’re made up of delicate materials or have ornate detail, most panties are machine washable. If your panties have stains, use a gentle wash and/or stain treatment and soak them for several minutes. Place them in the washing machine and run them on a delicate cycle with a cold or warm temperature setting (don’t use hot water – heat can break down the delicate fabric and elastic). It’s also a good idea to put your panties in a lingerie wash bag to keep them separated from other items. You can wash cotton underwear in hot water, but it may shorten the life of your panties. Make sure you always air dry your panties.