2, oil pressure is essential oil massage. Essential oil massage refers to the method of applying essential oil massage oil (massage oil made from base oil and essential oil or directly using blended compound essential oil) to the parts that need massage. By massaging your body, you can relax and relieve stress. Functions and Efficacy Oil pressure massage can stimulate and regulate physiological processes, enhance blood and lymphatic circulation, and balance endocrine system. It is a healthy and advanced health care therapy.