EDIT: After a bit more research it seems the manufacturer may have changed the dimmer to a safer version recently. Here is a picture of mine for reference. If your dimmer has these markings it is the version that is faulty and will burn up. The little thing next to the cover is the transistor that burned up. It used to have three terminals but the other one disintegrated.

Mauritane Handcrafted 6.75" Salt Lamp is not only visually stunning but provides innumerable health benefits. They are natural negative ion generators. Simply put, salt attracts moisture. The interaction of humid air with the surface of the salt crystal releases negative ions. The negative ions bind to the position ions that are created by electronic devices known as “electronic smog” (computers, television screens, telephones, microwaves, etc.). The positively charged ions lose their...
In addition to generating negative ions which improve mood and energy levels, the soft, natural light given off by a Himalayan pink salt lamp is close enough to the warm glow of sunshine that they can even be used to relieve the symptoms of Seasonal Affective Disorder. This year when the days get shorter, fight back the lethargy by surrounding yourself with a few HPS lamps set on timers.
Since positive ions are often created by electronic devices like computers, TVs, microwaves, and even vacuum cleaners, they can often exacerbate problems like allergies, stress and sleep trouble. Negative ions can neutralize positive ions (they bond together) and help cleanse the air. Additionally, salt lamps offer a soothing glow that many people find relaxing.
They can definitely clean the surrounding air of allergens and, even though it’s difficult to find extensive scientific studies to back all of the reported health benefits of salt lamps, the many positive reviews of people’s personal experiences makes them well worth considering, either for your own home, or as a gift for a friend who cares about health and wellness.
In 1966, a hospital in Jerusalem conducted a study of thirty-eight infants suffering from respiratory problems. They cared for half of the infants in a ward without any ion change, and cared for the other half in a ward where a negative-ion generator was in use. “The researchers reported that neg-ions without any other treatment “ that is, no drugs “ seemed to cure attacks of asthma and bronchitis more quickly than drugs, antibiotics included… children treated with neg-ions were less prone to ‘rebound attacks’ (relapses)… the scientific report said that the tests ‘demonstrated that atmospheric ions have an effect on infants, especially those suffering from asthmatic bronchitis. Less scientifically, they found that the babies didn’t cry as often and as loudly as they did in normal air.” The Ion Effect, by Fred Soyka, p. 57, 1991.
A large block of salt, like a pink Himalayan salt rock crystal, works by attracting the water molecules in your room. In so doing, it also pulls in all the pollutants and contaminants attached to these molecules. The salt rock lamp helps to detoxify your room by capturing and holding these particles so they aren’t left floating around for you to breathe in. Then, as the bulb heats the lamp, the water vapor is released back into the air, but the rock salt lamp retains the contaminants.
A Himalayan salt lamp is a lamp formed from natural Himalayan salt and absorbs water and particles from the air. It removes negative ions, and replaces them with positive ions, while  purifying  the air and keeping your lungs clear. Salt crystal is perfect for those with allergy sensitivity, as the salt lamps work to purify the air and emit ions for better air quality. The light glow of the lamp itself creates a calming sensation that is perfect for rejuvenation, relaxation and reflection.
Himalayan salt lamps are made from pink salt crystals mined from the edge of the Himalayan Mountains—the only place where you can acquire authentic Himalayan pink salt. However, the lamps themselves range in color from light pink to pink with an orange hue, depending on the mineral concentration. The pink Himalayan salt crystals are mined, then hollowed out and fitted with a bulb to provide both light and heat. Himalayan salt rock lamps also come in baskets of crystal salt blocks with a light underneath.

Another way to improve the quality of air in your house is by frequently airing the place, so the air can circulate. In the winter months or when there are high levels of air pollution, it might be difficult to leave the windows open and sufficiently air all the rooms. That is when the salt lamps can be particularly useful and can help cleanse the air and remove the stubborn winter bugs.
So many things around us nowadays release electromagnetic radiation in the form of unhealthy positive ions — things like your cell phone, computer and television, just to name a few.  This electromagnetic radiation (EM), aka electrosmog, may be invisible but is believed to cause some serious long-term effects. Constant exposure to EM radiation is known primarily to cause fatigue, increase stress and weaken the immune system.
Match the beauty of a natural Himalayan salt lamp with the power of technology with a multicolor USB salt lamp. All of the benefits that you expect from a Himalayan salt crystal lamp are featured, most notably its ability to draw in moisture and purify the toxins that you may have in your environment from the air in a process known as hygroscope. They also have the natural orange-pink glow that has made Himalayan salt crystal lamps famous throughout the world.

Remember, even if you’re like me and you can’t sleep unless the room is totally dark, you can always turn the lamp off at bedtime. Just leave it on for the rest of the day so it can do its work while you’re awake. People in humid climates should be aware that HPS lamps tend to weep when the salt becomes cool. You’ll definitely want to protect surfaces by placing a saucer underneath and be sure to follow the instructions for use and care which should be included with your lamp!
At first I was a bit concerned after reading reviews about the dimmer switch (basically a variable resistor) heating up, melting, and causing a fire. My kid bought this Himalayan Pink Salt Lamp for my wife as a Christmas gift because she has been wanting one for a long time. I read up on the fire hazard and noticed that a recall has been placed on this salt lamp. All of the one star rated "fire warning" reviews are from many months or years ago. So I assume that the batch that was sent out has had this dimmer issue fixed. Basically a higher wattage variable resistor is needed to fix this problem.