Po Sum On Oil is an all-purpose peppermint massage oil used to nourish muscles, improve circulation, and relieve pain. Treat muscle aches, insect bites, scratches, burns. 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. Comes in a 1 fl. oz. (30 ml) bottle.