This 10% dilution helps customers afford this wonderful exotic essential oil. The fragrant flowers bloom from June to October. A small amount of oil is prepared by extracting the blossoms with petroleum spirit and evaporating the solvent at a low temperature, but this treatment by killing the flower at once, stops the process of scent formation, so that the yield of oil is only one fifth (some say one-ninth) of that extracted by fats in the effleurage process. The oil obtained by extraction with volatile solvents is a pale-brown liquid with a pleasant odor, which is quite distinct, however, from that of pomade.