Lemongrass oil is a highly concentrated essential oil extracted from the leaves and stalks of the lemongrass plant (Cymbopogon), known for its distinct, refreshing citrus-earthy scent and versatile therapeutic properties. It is widely valued for reducing stress, purifying oily skin, soothing sore muscles, and acting as a powerful natural insect repellent. Because it is a potent essential oil, it must always be diluted with a carrier oil before skin application.