Limonene is a type of organic compound known as a terpene, which is commonly found in the essential oils of citrus fruits like lemons and oranges. It is used in a variety of applications, including as a flavoring agent, fragrance enhancer, and as a solubilizing agent in cleaning products. Limonene has also been studied for its potential health benefits, including anti-inflammatory, antioxidant, and anti-cancer properties. Research on limonene continues to explore its potential uses in various industries and its effects on human health.