Kazima Perfumers uses the best and most effective methods for giving an essential oil is a liquid that is generally distilled (most frequently by steam or water) from the leaves, stems, flowers, bark, roots, or other elements of a plant. Essential oils are typically extracted from plant matter via steam distillation. The plant material is treated with steam, which 'cooks' the plant, breaking it down and releasing its essential oil. The steam containing the essential essences is cooled and the oil separated from the water and filtered to become essential oils.