The flowers from a small tree of the family Oleaceae are used in China and Japan as a starting material in the production of a concrete and an absolute. The flowers of Osmanthus Fragrans are extracted with petroleum ether to yield a concrete, which in turn gives an absolute after alcohol extraction. Since the yield of absolute from concrete is only about one kilo per 3,000 kilos of flowers, the enfleurage method or the infusion process have also been applied to these flowers. The perfumed extraction oil can be used as is in cosmetic preparations with some advantage.