This unique combination of quality oils is absorbed into the skin causing the blood vessels to dilate (open, relax). When this occurs more blood can flow through these vessels bringing more oxygen and nutrition to the surrounding muscles, tissues and tendons causing these to relax and reduces or eliminated the pain and discomfort. For most people it starts to work within five minutes. It will last from five to eighteen hours. Continued use will add circulation to the area and with more and better blood flow the condition that causes the pain will be improved.