Essential oils areĀ aromatic,Ā concentratedĀ plant extracts that are carefully and meticulously extracted throughĀ steam distillationĀ orĀ resin tapping.Ā Other processes includeĀ expression,Ā solvent extractionĀ absoluteĀ oil extraction, resin tapping, wax embedding, and cold pressing.Ā An essential oilĀ is essential in the sense that it contains the essence of the plant's fragranceĀ the characteristic fragrance of the plant from which it is derived.Ā Essential oils are often used forĀ aromatherapy,Ā in which healing effects are ascribed to aromatic compounds.