Moxibustion is a traditional Chinese medicine therapy using made from dried mugwort (Artemisia argyi). Available scientific evidence does not support claims that moxibustion is effective in preventing or treating cancer or any other disease, but it plays an important role in the traditional medical systems of China (including Tibet), Japan, Korea, Vietnam, and Mongolia. Suppliers usually age the mugwort and grind it up to a fluff; practitioners burn the fluff or process it further into a cigar-shaped stick. They can use it indirectly, with acupuncture needles, or burn it on the patient's skin.