Essential oil soaps are highly concentrated fluids extracted from plant-bark, berries, flowers, leaves, roots, seeds, or twigs – which are produced in many different ways. The most common steam distillation is the pressed steam passing through the plant material, which evaporates the oil. The combination of oil and vapor mixing is mixed back into the liquid, and the oil is skimmed.
Plants that are very fragile for steam distillation, such as jasmine, orange blossom and rose, are extracted using their oil solvents. The oil made by this process is called complete and is usually used in perfume or dissolve because solvent residues make most of the area inappropriate for local use.