Peppermint Nation

Oral administration of lemongrass prevents the destruction of neurons caused by glutamate according to animal research. This suggests it may help protect against cognitive decline.
http://www.ncbi.nlm.nih.gov/pubmed/23949776

In vitro research concluded that ylang ylang oil prevented the adherence of bacteria (K. pneumonia and S. aureus) to catheters, which could help prevent hospital–acquired infections.
http://www.mdpi.com/1420-3049/19/11/17943/htm

According to research, vetiver essential oil is a potent natural antioxidant.http://www.ncbi.nlm.nih.gov/pubmed/16190618

Mosquitoes will soon be out and about looking for their next victim. Research suggests that tangerine essential oil kills mosquito larvae (even those resistant to traditional chemicals used for the same purpose).
http://www.ncbi.nlm.nih.gov/pubmed/20618656

Topical application of lavender and bergamot to the abdomen may be beneficial for the relief of occasional anxiety and sadness according to research.
http://www.ncbi.nlm.nih.gov/pubmed/21922934

Research suggests that clove essential oil may kill Demodex parasites that live on humans near hair follicles. These parasites are associated with inflammation, itching, rosacea, acne, and thinning hair.
http://www.ncbi.nlm.nih.gov/pubmed/25780426

 Research suggests that inhaling lavender essential oil may reduce anxiety related to going to the dentist.
http://www.ncbi.nlm.nih.gov/pubmed/25328900

Here are just a few more


For your reference,  here are two studies reviewing the use of essential oils
  http://www.ncbi.nlm.nih.gov/pubmed/25359697
http://www.medscape.com/medline/abstract/18435748


If you look on pub med this is what you will find when you type in Essential oils
Results: 1 to 20 of 13775