This wonderful accent light features a crystal salt block that comes from a mine at the foot of the Himalayas; thus emitting a deeper, richer red glow that is rich in light and minerals. Placed over a light source, the stone shines with a warm and inviting glow. Perfect for massage therapists who wish to warm the stones. The Chereen 2 Ibs Salt Lamp also works as an air purifier. When lit, the lamp emits negative ions that fight against positively charged particles that cause you to feel stuffy and sluggish. The lit salt crystal clears the air naturally of allergens like smoke, pet dander, pollens, and other air pollutants. It dilutes odors so that you can breathe easier. People with asthma often find it helpful in reducing their symptoms. You can keep the lamp lit for as long as you like to maintain this purifying effect. The unique large salt lamp is made from salt crystals gathered at the foothills of the Himalayas. The outside surface of the lamp stays cool to the touch, as the heat of the light is dissipated within the salt.