The Egyptians, Hebrews, Greeks, and Romans considered Rosemary sacred. The leaves were traditionally burned in hospitals to purify the air, and the oil has a similar effect on the body. Its strong, clear, refreshing herbal scent is both clarifying and invigorating. Rosemary oil can be an effective treatment for mental fatigue, circulation problems, as a pain reliever for the muscular system, and as support for the circulatory system. It aids in prevention of mental exhaustion, stress and stimulates circulation to skin and scalp, providing great toning and astringent properties. It also stimulates hair follicles. Rosemary oil has a pronounced action on the brain, clearing the mind and aids the memory. It also helps with headaches and migraines. Aromatherapists use it to relieve suffering from poor circulation, muscle aches, rheumatic joint pains, water retention, cellulite, respiratory problems, colds, and flu. It is believed to act as a nerve tonic, energizing the central nervous system.