Carrier oils also known as base oil or vegetable oil is applied to dilute essential oils help carry them into the skin. Carrier Oils generally contain ingredients such as fat-soluble vitamins, minerals, antioxidants, and other nutrients that improve the look and feel of skin and hair by adding moisture, soothing irritation, and reducing the effects of dryness.Carrier Oils are obtained mostly from nuts and seeds. Cold Pressing, Expeller Pressing, Oil Maceration, and Solvent Extraction are most common extraction process. A high-quality carrier oil will be as natural and pure as possible, preferably cold-pressed, because fragile nutrients in the oil can be damaged if they are extracted with heat.