It is black rock salt made by collecting and baking from the vast salt formations located in the Himalayas. When added to water, sulfur and natural minerals dissolve, and you can feel moist skin after bathing. Enjoy the feeling of a hot spring with the scent of sulfur at home. Rock salt has minerals that are in the same balance as minerals in the human body, and it is said that it also has the peculiarity of emitting ions when dissolved in water. It is said that using it as a bath has a positive effect on the body. Himalayan salt is said to have been formed when the water evaporated due to the blockage of what was once the sea, and the salt was concentrated and the soil became salt-rich rock. In addition, it is thought that rock salt taken into the strata by the movement and deposition of the earth's crust becomes the salt layer. The Himalayas are said to have been born between about 50 million ~ 40 million years ago, and rock salt is said to have been formed from seawater billions of years earlier. Please try to dissolve such a rocky sea of a long time ago in your bathtub at home. [Recommended amount for bathing] Please add 1 piece of rock salt (about 30g~50g) to about 180~200L of hot water.