Base Oils What Are Carrier Oils? Base oils (sometimes called "carrier" oils) are a key part of aromatherapy. They should be used to dilute essential oils so they can be applied to the skin without causing reactions or side effects such as irritation, flushing, or burning. These base oils are usually extracted from seeds and nuts, such as coconut or avocado. It stands to reason that carrier oils each have different properties and uses. The carrier oil you choose will depend on the intended use and the desired outcome. https://www.nationalnutrition.ca/aromatherapy-essential-oils/base-oils.html #BaseOils