['Eucalyptus essential oil. Many people use this oil without realizing it. ... ', 'Rosemary essential oil. Rosemary is a common garden herb. ... ', 'Peppermint essential oil. ... ', 'Frankincense essential oil. ... ', 'Oregano essential oil. ... ', 'Thyme essential oil. ... ', 'Geranium essential oil. ... ', 'Cinnamon essential oil.']