When used in the shower for aromatherapy purposes, eucalyptus essential oil is known to provide relief from congestion. However, eucalyptus is also used in aromatherapy to improve mood! When inhaled, eucalyptol, a major component in eucalptus, is known to aid in decreasing feelings of anxiety and stress. Rosemary essential oil is also added here to aid in relief of congestion, mental clarity and stress reduction.