The following is quoted from the instruction manual. Purchased at the end of 2023. [Nigari Onsen] 500g Regular price: 1727 yen + 200g (equivalent to 700 yen?) - This is bath nigari, which concentrates magnesium by removing sodium chloride and calcium chloride from nigari. - Can be used by the whole family, from babies to the elderly. - Reduces itching due to the effects of magnesium chloride. - Add 1 to 3 level scoops (approx. 15g to 45g) of the included spoon to the bathtub (approx. 180L to 200L) when bathing. - Since it is highly hygroscopic, close the zipper seal tightly after opening. - Can be used with a reheating function as sodium has been removed. - Will not damage the bath or bathtub. - The remaining water can also be used for washing clothes. Moisturizing Oil Natural Nigari from the Seto Inland Sea atopylabo Dr. Itsuko Doctor Itsuko Bath additive