Limonene is a colorless liquid hydrocarbon classified as a terpene. It is primarily found in the peels of citrus fruits like oranges and lemons, giving them their characteristic scent. Limonene is commonly used in food flavoring, fragrances, and cleaning products due to its pleasant aroma and potential antibacterial properties. In addition to its aromatic qualities, limonene has been studied for its possible health benefits. Some research suggests it may have anti-inflammatory and antioxidant effects. It is also being explored for its potential role in enhancing mood and reducing stress, making it a popular ingredient in aromatherapy.