Essential oils are natural oily compounds characterized by their strong concentration and pungent smell. They are extracted from the sap of roots, stems, leaves and flowers by distillation or cold pressing.
45 lemons are used to produce 15 milliliters of lemon essential oil and a thousand pounds of rose petals are used for one pound of rose essential oil. Essential oils are not intended for oral administration because their contact with the skin or oral tissues irritates it. Some types are inherently toxic, even in very small doses.