NOW Foods Rosemary Oil is a 100% pure essential oil steam-distilled from the flowering tops and leaves of Rosmarinus officinalis — one of the most celebrated herbs in both culinary and therapeutic traditions. Rich in 1,8-cineole, camphor, and alpha-pinene, rosemary oil is prized in aromatherapy for its mentally stimulating and clarifying effects — research suggests it supports memory, focus, and mental alertness. Topically, it is widely used in scalp and hair care to support circulation to the hair follicles, and has been clinically studied for scalp health. In diffusion, rosemary is invigorating and focus-enhancing — excellent for work or study environments. NOW Foods' Rosemary Oil is GC/MS tested to confirm identity and purity. Dilute in a carrier oil for all topical applications. Not for internal use.