Beyond their crystalline beauty, these crystal salt lights are treasured for their restorative powers. Set on a coffee table, nightstand or counter, the salt lamp naturally discharges negative ions into the air, which counter the positive ion pollutants caused by home appliances, smoke, carbon dioxide and poor ventilation. Simply flip the switch and the 25W bulb lights alabaster-like through the beautiful pinkish stones. They help relieve stress, headache, sinus and asthma symptoms, enhance the immune system, and improve learning and alertness.