Moxibustion involves the focused application of warmth on the body by burning natural compressed mugwort leaf ( Folium Artemisiae Argyi ). Moxibustion is mainly applied in two ways, by burning moxa wands, that are lit and suspended above the skin, or moxa cones that are placed over a protective medium on the skin before being lit. In both cases, the combustion of mugwort leaf uses the warmth and the therapeutic herbal vapour to improve the circulation of Qi and Blood, warm the meridians, relieve pain, increase resistance to disease and subdue swelling.