With a herby lemon fragrance, Melissa (3%) Essential Oil is highly effective in treating nausea and indigestion. Melissa (3%) Essential Oil uses and Benefits: Skin & Hair: Generally not used in skin and hair because of the high risk of allergic reaction due to the high aldehyde content. Body: Confirmed as having strong antiviral properties and has strong antiviral properties against viruses associated with influenza, herpes, smallpox and mumps. It is also recommended for nausea and indigestion. Mind & Emotions: Uplifting and antidepressant quality.