Limonene is a colorless liquid aliphatic hydrocarbon with the formula C10H16, classified as a cyclic monoterpenes, and is the major component in the oil of citrus fruit peel . Limonene has antioxidant and antibacterial properties and is used in medicine and pharmaceuticals as a preventive agent and in cosmetics as a solvent and carrier in skin protectors and in fragrances as a protective agent against volatile components. limonene is an activator of aldehyde dehydrogenase with a favorable safety profile for clinical use. Its oral consumption activates the aldehyde dehydrogenase enzyme and reduces the aldehyde level. Limonene has many other positive attributes: It is not carcinogenic or mutagenic. It is biodegradable and non toxic This company’s limonene is obtained from orange peel using centrifugal separation and steam distillation techniques and can be used in cosmetics, food and green solvent industries.