Rosemary oil is extracted from the herb by steam distillation. It has a fresh, strong, woody and herbal scent. Rosemary oil contains a wide range of nutrients such as iron, calcium, vitamins and antioxidants. It helps stimulate cell renewal, promoting healthy healing as well as infusing the skin with moisture and improving circulation. In hair care, rosemary oil is known to stimulate hair growth, promote a healthy, moisturized scalp and aid with premature greying. Avoid while pregnant.