Carrier oils are oils that are usually plant based. They can be used by themselves to moisturize and heal skin. Different carrier oils have different benefits and they can be combined to create oils that target specific skin needs. They are also used to "carry" essential oils to the skin and help your skin to absorb them, hence the use of the word "carrier". Some carrier oils are Jojoba, Argan, Coconut, Sweet Almond. They are also used to dilute essential oils. This is an important function as though authentic essential oils are natural, they are also concentrated and can be too strong to use on skin without dilution. Blending a carrier oil does not diminish the benefits of the essential oil when using correct ratios. When blended correctly, the benefits to your skin is amazing!