Lavender is the most versatile, with a spread of properties ranging from analgesic, via antidepressant, antiseptic, bactericidal and decongestant, to  insect repellent, and sedative.
 
Lavender is best know as calming, soothing and above all balancing.
This essential oil, like most others, is usually used mixed with a base or carrier oil like sweet almond, grapeseed, jojoba, avocado and others, unless it is for your bath, when you can simply add a few drops in your bath water. Use this oil for a pleasant fragrance or aromatherapy with an oil burner or vaporiser. In aromatherapy, it is often used to combat depression, stress, and fatigue.