Originally used in the French perfume industry, essential  oils have grown in use by many.  Aromatherapy is now a modality used in many therapies.  The use of essential oils in Chinese medicine is a natural progression of aromatherapy.  
It is a combination of the refined plant essences used on acupuncture points.  Individual essential oil blends can be made for each patient, tailored to individual conditions.  It is an easy and effective way for any patient to continue treatment after an acupuncture session.