This essential oil is the most common choice for applications in soaps, candles, perfume, and cosmetics. The “40/42” refers to the balance of Linalool and Linalyl acetate esters, which is what gives it such a consistent floral scent but also means it is standardized. For this reason some aromatherapists regard this oil as something that is not considered 'therapeutic grade" or "pure grade" since it is does not come directly from the plant in this form. Instead this oil is standardized in a lab to ensure consistency in smell. It also has a balsamic woody undertone with a floral, herbaceous fresh scent.