Himalayan salt is a natural salt, it is harvested in mountains in Pakistan and is prized by some for its nutritional content and the fact that it is unprocessed.

Sodium and 84 Other Minerals
While Himalayan salt is made up primarily of sodium, it also contains 60 to 65 trace minerals. Sodium helps keep your blood pressure in check as well as aiding in cardiovascular function. 
 
Using in Cooking and Seasoning
Himalayan salt is an alternative to table salt. The larger crystals of the rock salt are best added to soups, stews or marinades, where they are easily dissolved. 
 
Using in Brine Therapy
Because of its mineral content, Himalayan salt can also be used in brine therapy, where it can help regulate your blood circulation and pressure, as well as treat skin diseases and help restore your acid-base balance. To take part in brine therapy, soak in a bath of dissolved Himalayan sea salt, which helps promote self-healing and detoxification through osmosis.