This essential oil is made from the Smithii variant of eucalyptus, the mildest variety of all eucalyptus trees, so it is suitable for more susceptible people. It helps to protect the body against germs and helps to strengthen the immune system. It is often used in conditions such as constipation, angina, bronchitis or sinusitis, as it contributes to the secretion of mucus and helps to relieve the respiratory tract.