This soap was created by carefully selecting ingredients that are good for the skin and kneading them by hand. It contains three ingredients: lava from Akita-Yakeyama, a small stratovolcano located between Kazuno City and Semboku City; herbs grown at a herbal laboratory in Shonai City in Yamagata; and Manuka honey from New Zealand. In pursuit of a safe soap that is gentle to the skin, no chemical substances such as petroleum-based materials or preservatives, or even water, are used. Each soap is kneaded and made into a round shape by hand by only using sap extracted from white birch trees; therefore, each has a unique shape, which is part of the appeal of handmade products. By drying and allowing the soap to sit for a month, it becomes firm and can be used for about three to four months. It is a product recommended for those who have skin trouble.