Eucalyptus oil is distilled from the leaf of Eucalyptus, sp. Eucalyptus oil has a long history of use as a pharmaceutical, antiseptic, repellent, flavoring, fragrance, and also in industrial processes.
To make the essential oil, leaves of Eucalyptus are steam-distilled into a plant extract (“Eucalyptus oil,” 2014). Two aspects of Eucalyptus oil can help foot odors: Its antiseptic properties can retard the growth of bacteria, and its fresh fragrance can help mask your foot odors.