Lavender essential oil aroma you will find, is a wonderful balsamic woody undertone, moreover with a herbaceous fresh floral scent. In addition, for your understanding, the “40/42” refers to the balance of Linalool and Linalyl acetate esters that are standardized in its production and is very consistent. *Natural and Artificial blend. Some aromatherapists do not consider Lavender 40/42 as therapeutic 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. Lavender essential oil aroma is both lovely and refreshing.