Lavener oil is an essential oil obtained by distillation from the flower spikes of certain species of lavender. Two forms are distinguished, Lavender Flower Oil, a colorless oil, insoluble in water, having a density of 0.885 (g/mL); and Lavender Spike Oil, a distillate from the herb Lavandula latifolia, having density 0.905. Lavender Flower Oil is a designation of the National Formulary and the British Pharmacopoeia. It is not a pure compound; it is a complex mixture of natural products. Lavender oil should never be taken internally.