citrus oils, including Bergamot, Grapefruit, Lemon, Lime, Tangerine, and Wild Orange. All citrus oils come from the rind of the fruit. Citrus essential oils are also all produced using cold expression, also known as cold-pressing. These are also great oils to take internally or diffuse. Though you can use them topically, be sure to avoid sunlight for 12 hours after when applying the oil directly to your skin, whether Neat or diluted for sensitive skin. The most notable similarity between the six citrus essential oils is their ability to affect the emotions. Most of these oils, including Grapefruit, Lemon, Lime, Tangerine, and Wild Orange can help uplift your mood or your energy levels. On the other hand, Bergamot is calming and soothing to the emotions. The best way to use citrus oils for mood or emotional balance is to use them topically on the back of your neck or the bottom of your feet, or aromatically in a diffuser. Lemon, Lime, and Wild Orange also are excellent at purifying the air as they are diffused.