Essential oils are huge with the staff at the schools that I work with…
Being Dr. Evidence-Based-Practice, I did a survey of all of the essential oils users on staff.
Here were my findings.
100% satisfaction with anything that was subjective and not able to be objectively measured (mood, sense of wellbeing, stress, etc.)
0% effective for anything that can be objectively measured (blood pressure, reduction in # of sick days, etc.).
Here is my favorite reference on essential oils.
Using Essential Oils – Ultra Spiritual Life episode 33