The Soja is a comb cleaner. The pale yellow soja, used by Princess Sookseon (the daughter of King Jeongjo) is made of ivory. The red soja, used by Princess Deok-on (the daughter of King Soonjo) is made of wood and red lacquer. Chinese characters, meaning longevity and good fortune, are inlaid on the handle. Rouge stamp for makeup is made of rhinoceros horn.
Details