You can't avoid the dust, noise and stress of the modern world - thankfully you don't have to live with it. Give your home a touch of tranquility while also improving its air quality with our Natural Himalayan Crystal Salt Lamp. Known for its rugged beauty, gentle warm ambience and significant health benefits including purifying the air, improving sleep, reducing stress and promoting general sense of wellbeing this lamp will add warmth to any room in your house from day one! The hand-carved salt crystals are gradually ionizing the air thereby producing negative ions which suppress airborne particulate matter making them perfect for asthma sufferers or anyone who wants cleaner air around their home. All lamps include bulb and UK 3 pin plug. Himalayan salt is hygroscopic in nature which means that it will absorb moisture from it's surrounding. It's then usual for it to get damp when that moisture is released.