Himalayan salt

This geological formation consists of crystalline halite intercalated with potash salts, overlain by gypsiferous marl and interlayered with beds of gypsum and dolomite with infrequent seams of oil shale that accumulated between 600 and 540 million years ago.

[9] Analysis of a range of Khewra salt samples showed them to be between 96% and 99% sodium chloride, with trace presence of calcium, iron, zinc, chromium, magnesium, and sulfates, all at varying safe levels below 1%.

[20] The impurities giving it its distinctive pink hue, as well as its unprocessed state and lack of anti-caking agents, have given rise to the unsupported belief that it is healthier than common table salt.

[18][12][21][22][23] In the United States, the Food and Drug Administration warned a manufacturer of dietary supplements, including one consisting of Himalayan salt, to discontinue marketing the products using unproven claims of health benefits.

[24] Slabs of salt are used as serving dishes, baking stones, and griddles,[25] and it is also used to make tequila shot glasses.

[15][29] Similar scientifically unsupported claims underlie the use of Himalayan salt to line the walls of spas, along with its use for salt-inhalation spa treatments.