Mastic Essential Oil Lentisco essential oil is obtained by steam distillation from the leafy branches of Pistacia lentiscus, a typical shrub of the Mediterranean scrub. It is an essential oil that tends to be little known yet of great interest in aromatherapy. Probably irreplaceable in some specific circumstances. A great venous and lymphatic decongestant, Mastic essential oil deflates and decongests everything that is congested. A few drops added to a Birch oleolite, in synergy with a Juniper or Cypress essential oil, help us drain and eliminate any lymphatic stagnation. In summer, a massage with lentisk essential oil appropriately diluted in carrier oil helps us to give relief to heavy, swollen and fatigued legs. Phlebotonic, promotes return circulation. For men it is said to be an excellent decongestant of the prostate.