Depending on the scent, emotional responses then kick in to exert a calming or energizing effect on the body. Alternatively, some proponents suggest that certain aromas may work by stimulating the glands, prompting the adrenal glands, for example, to produce steroid-like hormones that fight pain and inflammation. Others believe that the essential oils, whether inhaled or rubbed into the skin, react with hormones and enzymes in the bloodstream to produce positive results. Whatever the truth of the matter, aromatherapists assign specific properties to each essence. Here are typical claims for some of the more common essential oils.
Many essential oils can trigger bronchial spasms.
If you have asthma, do not use any form of aromatherapy without first consulting your doctor. If you have any skin allergies, do not use essential oils in your bath. To check whether you are allergic to an oil, place one drop on the inside of your elbow and wait 24 hours to see if it produces a reaction. As with any medication, it's best to avoid aromatherapy during pregnancy. Be especially wary of sage, rosemary, and juniper oils.