20. Eucalyptus
Eucalyptus is an essential oil with antiseptic and antibacterial properties. It is known to help reduce inflammation in your body, whether it's due to arthritis or illness. When used in your diffuser, this oil can help cure seasonal allergies and many ailments, including flu and pneumonia. Many people will mix this essential oil in a solution to help fight off any mold growing around their homes.
This is a popular essential oil for all-purpose cleaners, including wood polishes. Other health benefits of eucalyptus include cough suppression or quietness, easier breathing, blood sugar control, repelling insects, soothing cold sores, refreshing breath, and disinfecting wounds.