Rosemary Oil is an essential oil also referred to by the botanical name Rosmarinus officinalis. It is steam-distilled from the flowering tops, stem and leaves of the rosemary plant. This popular essential oil is clear in color and is described as having a fresh woody scent. Rosemary oil is used throughout the cosmetic industries where it is a common ingredient in hair, skin and beauty products such as hair moisturizing creams, skin lotions and balms.