What is the Essential Oil Diffuser & Humidifier? Turn any living space into a peaceful spa-like haven. The Essential Oil Diffuser & Humidifier helps calm the mind and body using aromatherapy and a cool mist. Set the light to off, continually changing colors, or your favorite color – choose from red, blue, green, pink, yellow, aqua, or turquoise. Add a few drops of essential oil to water and choose from 2 modes: Continuous or 30 seconds of rest for every 5 1/2 minutes of operation. Benefits of Color and Aromatherapy For thousands of years, people have been using aromatherapy with essential oils to support overall health and well-being. Aromatherapy is believed to promote relaxation, enhance mood, relieve stress, and harmonize the mind, body, and soul. The revolving rainbow of lights adds flowing color and ambiance when illuminated. The use of colored lights, called chromatherapy, is thought to have soothing effects. Essential oils are not technically oils. Rather they are highly concentrated plant constituents that possess medicinal and cosmetic qualities. They are extracted from flowers, leaves, seeds, roots, fruits and branches, depending on the plant. Unit size: 6-1/3" W x 5-1/3L H