What are carrier oils?

Carrier oils or vegetable oils are lipids and are largely composed of fatty acids. Pure carrier oils are cold-pressed vegetable, nut or seed oils. They are readily absorbed by the skin, nourish and heal it. Carrier oils help essential oils to penetrate the skin, particularly in therapeutic massage or in bath. They should be kept in a cool, dark place, tightly closed to avoid oxidation. The following carrier oils are used for blending with essential oils: Apricot, Argan, Avocado, Evening Primrose, Grapeseed, Jojoba, Macadamia, Rosehip, Sweet Almond, and Wheat germ. You can find carrier oils here

What are carrier oils?