Limonene is found in citrus essential oil, the contents can be up to 90%. (-)-Limonene is naturally found in Pine needle oil, Turpentine, Cajeput oil and other essential oils. It appears liquid and has orange smell. It is make from Terpenes of orange oils by the method of fractionation.
Limonene has optical isomers, L-Limonene, R-Limonene and a meso isomer, Dipentene.
In the flavoring formulation of personal cares, the contents of Limonene can be up to 30%. Limonene is also mainly used as intermediate for synthesis Bergamot esters, Norone, Cymene, Tonalid and Phantolid.