Salt lamps are known throughout the world for their ability to purify the air. These natural air purifiers work when lit by emitting negative ions into the air that attack positively charged particles.Bring a serene and tranquil feeling to any room with a beautiful salt lamp. Salt lamps should be kept away from moisture and are intended for indoor use only. Each hand carved lamp comes with a UL certified 2 meter dimmer cord, 15W bulb and base.