Eucalyptus oil has a strong camphoraceous, woody aroma. Its main constituent is cineole, a powerful expectorant and the oil has been used for many centuries for respiratory complaints, such as asthma, colds and coughs.
The blue gum eucalyptus (Eucalyptus globulus) is an evergreen tree of the Myrtaceae plant family and can grow up to 80 m tall. It is native to Australia and Tasmania, but approximately half of the world's plantations are currently in Spain and Portugal. It is also grown in Russia and China.
Eucalyptus oil is obtained from the leaves and twigs of the tree by steam distillation.