This is a bath additive made with Kusatsu Onsen's yunohana (hot spring flower), known for its relaxing effects. Purchased on-site in early November 2025. These yunohana are collected from the Yubatake source in Kusatsu Onsen, dried, and are only available for purchase there. They are also limited in quantity, making them difficult to obtain. I have several, so please comment if you would like to purchase two or more. Please be sure to carefully read the instructions before use. Not compatible with re-heating functions (oita-ki). I am selling this because it was not compatible with my bathtub. It seems that even just adding a pinch of yunohana to a washbasin of hot water and applying it to the affected area can be effective. - Product Name: Yunohana (Hot Spring Flower) - Brand: Kusatsu Onsen - Type: Bath Additive Thank you for viewing.