Kusatsu Onsen Natural Hot Spring Concentrate ■Kusatsu Meiyu no Yu■ This product is a concentrate of the source water from Kusatsu Onsen in Gunma Prefecture, famous as a hot spring resort since ancient times, including Yubatake, Sainokawara, and public bathhouses scattered throughout the town. The source water is a pH 2.4 acidic aluminum sulfate spring located on Sainokawara Street. This natural hot spring concentrate is 100% natural and does not contain any synthetic chemical ingredients. It is not classified as a pharmaceutical product, quasi-drug, or bath additive under the Pharmaceutical Affairs Law. Contents: 300ml Sediment is a component of the source water. Please shake well and use 1-3 times as a guide.