It is believed that to procure a single pound of pure rosemary oil, nearly 68 pounds of rosemary leafage is used up. Rosemary oil contains borneol, bornyl acetate, camphene, camphor, cineole, limonene, a-pinene, b-pinene, and verbenone and is known to induce mental as well as physical exhilaration which makes it one of the most effective aromatherapy oils.