Lavender oil is an essential oil obtained by distillation from the flower spikes of certain species of lavender. Therapeutic uses Lavender oil, which has long been used in the production of perfume, can also be used aromatherapeutically. The scent has a calming effect which may aid in relaxation and the reduction of anxiety. It may also help to relieve pain from tension headache when breathed in as vapor or diluted and rubbed on the skin. When added to a vaporizer, lavender oil may aid in the treatment of cough and respiratory infection. Lavender oil may also be used as a mosquito repellant when worn as perfume or when added to lotions or hair products.