Egypt Aromatic most popular list of essential oils (conventional and organic), Followed by our most popular concretes and absolutes. A conventional concrete is produced by solvent extraction using hexane; the absolute is displaced from the concrete using ethanol . An essential oil is obtained by steam/hydro distillation of a botanical material (fresh or dried) . In the case of steam/hydro distillation a by-product called a hydrolate is also obtained. It can be used as a floral water . Egypt Aromatic, has developed a certified organic extraction technique, involving neither petroleum nor synthetics of any kind.