The overall quality of essential oils is very important when using therapeutically. To be truly therapeutic and superior grade, an essential oil needs to be tested and certified pure, potent, genuine and authentic. True holistic healing requires unprocessed oils that are sourced directly from nature with nothing added. One should expect to pay a higher price for these high quality pure essential oils. A synthetic or fragrant oil is made by blending synthetic chemical compounds in a laboratory in an attempt to duplicate the scent of the flower not of the pure essential oil. The end result is an oil which is not recognized or used by those seeking to practice the principles of Aromatherapy.