Korean Spa Yeo Yong Guk was created under the philosophy of "a woman taking care of her face is akin to a king running a country." It was inspired by the ancient Korean novel titled "Yeoyonggukjeon" written by Ahn Jeong-bok from the Joseon Dynasty. Korean Spa Yeo Yong Guk understands that people have different body types, therefore applying the same massage method or medicinal herb to everyone will not always have the same effect. Different medicinal herbs and massage techniques should be applied according to one's body type.