Carrier oils are vegetable oils derived from the fatty portions of plants, typically from seeds, nuts, or kernels. They are used to dilute essential oils and other concentrated substances, making them safe for topical application. Common examples include coconut oil, jojoba oil, and sweet almond oil. Carrier oils help to moisturize the skin and enhance the absorption of essential oils. These oils are often chosen based on their unique properties and benefits. For instance, argan oil is known for its nourishing qualities, while grapeseed oil is lightweight and suitable for oily skin. Using carrier oils is essential in aromatherapy and skincare to ensure safe and effective use of essential oils.