Salt Lamps are basically a large Salt Crystal that is lit with an incandescent light bulb, LED, or candle inside. The primary benefit to these Salt Crystals is the emitting of negative ions into the atmosphere (e.g. Room in your house). These negative ions bond with positive ions and neutralize them before they are inhaled into your respiratory system. So countering positive ions with negative ions produced by Himalayan Salt Crystals is a very good thing for the atmosphere within your home.