The SpaScenter aromatherapy diffuser meets the demands of the most discerning aromatherapists. The aromatherapy SpaScenter diffuser is designed to provide you with the most efficient diffusion of essential oils in their purest form through cold evaporation. Put the aroma pad onto the pad drawer. Apply 10 to 15 drops of Green Valley's aromatherapy essential oils on the reusable pad and insert the drawer into your SpaScenter. Turn the dial to select your desired diffusion speed and within seconds you will experience the benefits of your chosen essential oil.