Eucalyptus (Eucalyptus globulus) is a sharp camphor smelling oil that's invigorating, penetrating, and cleansing. It is one of the best essential oils for diffusing. Helps support healthy immune and respiratory systems, clearing congestion, relieving sinus pressure, and reducing headaches. Eucalyptus is energizing and mentally stimulating while also stress-reducing. It can increase circulation and relieve sore muscles. Eucalyptus blends well with Cedarwood, Lavender, Lemon, Pine Needle, Rosemary, Thyme, and Marjoram.