Why do you think that so many cosmetics and perfumes are launched prematurely only to be yanked from shelves months later only after allergies and adverse health side effects have been reported? Aromatherapy is the treatment of physical ailment through essential oils which contain natural healing properties derived directly from nature.
Part of the reason why we're suffering ill health more now than at any other time before is because we've become so out of synch with nature. The thing that we used to rely so heavily upon 100 years ago barely gets an afterthought as we reach for the headache or the sinus pill from the medicine cabinet.