All of our essential oils are natural, undiluted and of the highest quality. These concentrated oils must often be diluted prior to application on the skin. A base oil or lotion when applied to the body delivers essential oils into the skin. These base oils are high quality, expeller or cold-pressed oils, each with their own unique properties. To help you choose the right oil for your application and skin condition, visit our blog for "How Do You Choose a Carrier Oil? Part I: Conditions & Skin Types" and "Part II: Properties, Uses & Shelf Life".