These Himalayan Salt Lamps with Oil Burners not only create negatively charged ions in the air, they also work similar to the oil burners. Just add some fragrance oil to the metal dish to gently fragrance the room. This is a good thing because modern day pollution and electrical equipment create positive ions in the air which are potentially harmful to us and cause air quality in areas affected to deteriorate. By using a Himalayan Crystal Salt Lamp you replace the negatively charged ions in the air which help us to avoid the alleged physical and mental harm that the �electric smog� creates. Each Salt Lamp comes complete with light fitting, bulb & plug.