Aromatherapy. Aromatherapy uses the essential oils of
plants to increase the body’s own sedative, stimulant, and
relaxing substances. The oils may be inhaled with steam
infusion or a burner and also may be massaged into the
skin. There have not been many studies done, and the ones
that were found have not provided enough evidence that
psychological or physiological changes have occurred (Smith
et al., 2010).