Next to rose and jasmin, the Lilac fragrance is probably the perfume which is most frequently created by the perfumer from synthetic and natural raw materials. Up to now, the essential oil producing houses have been unable to offer a true, natural oil, derived from lilac flowers and representing these flowers satisfactorily in odor effect. Only a few houses in Grasse, France offer materials which are said to be derived exclusively from lilac flowers. An absolute has been prepared from the flowers of lilac by hydrocarbon solvent extraction and subsequent alcohol extraction of the produced concrete.