Essential oil means the natural version of a fragrance as opposed to synthetically produced fragrance oils. An essential oil is the essence of a plant part . This can be either from dried flowers, bark, a tree or shrub, or from the peel of the fruit. The method of preparation is in itself a science, which differs from plant part to plant part.
This can be done, for example, by cold pressing and steam distillation. The essential oil is extracted from these plant materials. To give an idea of how concentrated an essential oil is, over eight hundred rose heads must be used to produce no less than five ml of essential rose oil. That's why essential oils are small, rich and precious drops that must be used with care and in the right dosages.