Carrier oils are neutral, plant-based oils used to dilute essential oils before topical application. They help ensure that essential oils are safely absorbed into the skin, preventing irritation. Common carrier oils include jojoba, almond, coconut, and grapeseed oil, each offering unique benefits such as moisturizing, nourishing, and enhancing the therapeutic properties of essential oils. Carrier oils are essential in aromatherapy, massage, and skincare routines.