The wonderful therapeutic values of essential oils are many: they have science-proven antibacterial, antiviral, and anticancer effects. On a psychological and emotional level, oils have demonstrated anti-anxiety and anti-depressant action in placebo-controlled research. And so, what about one of the greatest therapeutic challenges of our times: the ability to get a good night’s rest? Well, the data is in! A number of studies have shown essential oils to be able to improve both the quality and the duration of sleep.