Scientific studies have shown that salt crystal lamps can increase the negative ion count by up to 300%. Negative ionized air drastically reduces the number of indoor airborne bacteria and dust. Negative ions also benefit asthma patients, people with chronic lung illnesses, and allergy sufferers. As well, they help improve learning, memory, and emotional well being. By creating a balance of ions in the air, they stimulate natural drive and healthy energy. Their colors create a pleasantly calming and warm environment.