Clary Sage is a biennial or perennial herb that grows up to six feet in height. Clary Sage oil is known for its calming properties and benefits to the skin. The main chemical component of Clary Sage is linalyl acetate, part of the esters group, making it one of the most relaxing, soothing, and balancing essential oils. In the Middle Ages, the Clary Sage plant was frequently used to soothe skin.