Yes, yes... diffusing essential oils is all the rage these days, however, applying essential oils to the skin, in the form of body oils, creams or massage maximizes their effectiveness and promotes their personal health benefits. Essential oils MUST be diluted in water or carrier oils (i.e. Calendula Oil, St. John's Wort Oil) before applying to skin. The only two exceptions to this rule are tea tree and lavender. They are safe to apply "neat", or directly to the skin. Through topical application, essential oils are absorbed through the skin, enter the blood stream and benefit the entire body... physically, emotionally and psychologically. The euphoric, calming and/or uplifting affects of aromatherapy massage will continue to be felt for hours, as these natural essences work their way though the system and will eventually be eliminated with other body fluids. It is important to drink plenty of water following their application to maximize the cleansing process.