Description: As Our Products Line uses the water from Dogo hot springs , one of Asia?s major 4 sulfur hot springs and the biggest weak-alkaline sulfur hot spring in Korea and the medicinal herbs such as dandelion , angelica gigas , milk vetch root , yam (Diosoorea opposita Thunb.) and leaves of loquat (Eriobotrya japonica Lindley) sourced from the royal family?s secret of Joseon Dynasty ,