When lit, the heat from this Crystal Salt Tealight Holder diffuses the aroma of essential oils into the atmosphere. The lamp itself is hollow with a glass plate on top that can be filled with essential oils. With the same benefits as our Salt Lamps, tealight holders are ideal in your home or work place. This natural ionizer reduces the amount of positive ions in your environment, providing cleaner air and a healthier atmosphere. The natural warm glow of the tealight brings feelings of tranquility to any room.