Aromatherapy Functions in Chinese Medicine Increases the Guardian Qi; Dispels Pathogens; Rids Phlegm (one of the best mucolytics for the respiratory tract and mucus membranes): sinus infections, laryngitis, dry and irritating coughs, acute and chronic bronchitis, asthma, tuberculosis. Rectifies the Skin: acne, boils, oily-greasy skin, inflammation, rashes, fungal itching, insect bites, herpes, dermatitis. Fortifies the Po/Instinct: Gives courage. Tonifies the Heart; Regulates Blood Pressure; Lowers Cholesterol: palpitations. Transforms Damp in the Upper Heater: bronchitis.