Rock SaltRock salt is a naturally occurring mineral form of sodium chloride (NaCl), also known as halite. It is the same chemical compound as table salt but typically comes in larger, unrefined crystals and may contain impurities or trace minerals, giving it a variety of colours (white, pink, grey, or even reddish). Quality: Very Good Ingredients: 100% Rock Salt How To Use: Dissolve in warm bath water to soothe sore muscles and soften skin.