Question - What is an “essential oil”?
Answer- The cited article notes “The term “essential oil” is defined as follows: “an odorous product, generally of complex composition, obtained from a botanically defined raw material, either by water vapour extraction, by dry distillation, or by an appropriate mechanical process without heating. The essential oil is most often separated from the aqueous phase through a physical process, which does not involve a significant change in its composition.” (Vigan M. Essential oils: renewal of interest and toxicity. 2010 Eur J Dermatol 20(6): 685-692)
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