Himalayan Salt Stone Lamps are believed to produce negative ions into the air when heated. This process called air ionization is known to purify the air leading to improved cognitive performance, ease of respiratory symptoms, and improved mood and sleep. It is important to note that these claims are unsubstantiated at this time. Alternatively to medical uses, many lamp owners find these beautiful glowing salt sculptures to be a perfect compliment to home decor, highly beneficial in promoting relaxation, and stress reducing.