Psychological changes also occur. Positive reactions to natural aromas occur even if we have no specific memories associated with them. These reactions are often instrumental in determining an essential oil's specific therapeutic benefits in treatment. Several types of devices are used to fill a room's airspace with essential oils to maximize the therapeutic benefits of inhalation. Electric diffusers use heat to evaporate essential oils applied to pads, creating a subtly fragrant environment.
Ceramic diffusers contain a votive candle that gently vaporizes essential oils dropped onto water.
Car diffusers, plug-ins, light bulb rings and porous clay accessories are also popular. Used topically, essential oils have myriad applications for health, beauty and wellbeing. Essential oils, once absorbed, are safely excreted from the body through the body's normal channels of elimination within a relatively short time period. Aromassage is practiced by professionals with additional training in a wide range of modalities, including NDs, chiropractors, RNs, clinical aestheticians, bodyworkers from a variety of disciplines, reflexologists and other holistic practitioners working in clinics or spas. While many consider aromatherapy among the simple home remedies, it is in fact both a specific science and a deeply complex art.