Before providing treatment on an individual patient, two herbal balls were steamed in a stacked steamer pot for twenty minutes. Afterwards, the first ball was wrapped with towel to protect the patient's skin from a burn due to excessive heat, and then the practitioner gently touched and rolled the herbal ball on the treated areas, approximately ten seconds for each point. Then, the towel was unwrapped when the ball was warm enough to put directly on the patient's body. The second ball was replaced when the first one was slightly lukewarm. The two herbal balls were alternately streamed and alternately used until each treatment session was achieved. After each session, the balls were wrapped in a plastic bag and kept in the freezer until reuse. This study allowed the reuse of herbal balls for three treatment visits. The new balls were replaced when the next round of treatment started.