If given a choice to pick just one oil, then it should be lavender oil. Lavender (Lavandula angustifolia) is the most versatile of all essential oils. Most commonly known for its relaxing effects on the body, therapeutic-grade lavender has been highly regarded for the skin. It may be used to cleanse cuts, bruises and skin irritations. Lavender essential oil is frequently used in various forms such as aromatherapy oil, gels, infusions, lotions, soaps, baby products, and candles.