Instantly turn any ordinary light bulb into an Aromatherapy Scent Diffuser.  Brass Lamp Rings are heat type diffusers because they use the heat from the light bulb to diffuse fragrance into the air. Simply place lamp ring on light bulb with reservoir side up and fill with a few drops of essential oil.  Within minutes you will transform the atmosphere of any room.  Use up to a 100 watt bulb. Cannot use with halogens, because they get too hot.