Essential Essence fixed oils can be used in many applications including aromatherapy, massage, cosmetics, soaps, pest control and cooking. These oils are often referred to as "base" or "carrier" oils. In aromatherapy these oils are commonly used to dilute the pure aromatherapy oils prior to skin application. As a rough guide add approximately 5 drops of essential oil to 10mL carrier oil for body application and about 2 drops of essential oil to 10mL carrier for facial application. Contact us if you are unsure about how to blend your oils for specific applications.