Natural black salt rock salt (10kg). When used in the bath, it has a relaxing effect like a hot spring and warms the body from the core. Rich in minerals, it's gentle on the skin and also perfect for foot baths. Special prices are available for hot spring facilities, salons, spa businesses, or those who wish to purchase in bulk! Feel free to comment! Unused, brand new in a bag. Recommended for those who want to easily enjoy a hot spring experience at home!