Gabriel Mojay is a registered practitioner of aromatherapy, acupuncture, herbal medicine and shiatsu. He is a principal of the London-based institute of herbal medicine and aromatherapy, and is founding chairman of the register of qualified aromatherapists. He lectures internationally on essential oils and oriental medicine. Robert Tisserand is recognised for his pioneering work in the area of aromatherapy. He founded the highly respected Tisserand company, which produces essential oil and aromatherapy products, and is the principal of the Tisserand Institute.