Wild Essentials oils are therapeutic grade, 100% pure and undiluted. Rosemary Essential Oil. Botanical Name: Rosmarinus officinalis Strong, fresh, minty herbaceous aroma with a woody-balsamic undertone Helps reduce stress, nervous tension, boost mental activity, encourage clarity and insight, relieve fatigue, and support respiratory function. Used to help improve alertness, eliminate negative moods, and increase the retention of information by enhancing concentration.