Po Sum On Oil is an all-purpose peppermint oil that is primarily used to warm up muscles, improve circulation, and relieve pain. It can also be used to treat muscle aches, symptoms from the common cold, bites, scratches, burns, or to warm up the body prior to exercising. Simply massage the oil into muscles to relieve pain and provide deep penetrating warmth. May be used 3 to 4 times daily. For external use only.