Many people worldwide prefer rock salt over white edible salt. This salt can be identified by the pink tint. Other than cooking and food preservation, the uses of this salt are many like spa treatment. Also called sendha namak, this salt is used instead of any other salt by those fasting during nine days of Navratri. The reason behind its use is its purity. This raw and unprocessed salt is free of chemical components and pollutants. It provides body many essential elements, from copper, zinc to calcium and iron. This crystalline salt doesn't contain high sodium chloride, unlike white edible salt. Rock salt is good for promoting digestion, boosting metabolism, stabilizing blood pressure, and reducing stress.