Carrier Oils are fatty extracts of nuts or seeds. They are essential for utilizing essential oils effectively . Carrier oils provides vitamins and minerals and help drive the essentials into the lipid barrier of the skin or hair. Not to mention, it allows for a more diffuse application vs using the essential oil "neat"(undiluted); which can lead to sensitization or wasting your money because essential oils are highly volatile, meaning they can quickly evaporate losing their therapeutic properties.