How do the Uyghurs make their earthen soap?

eThe production method of the earth soap is relatively simple, with the leftover sheep tail oil as the main raw material --- simmering with fire repeatedly three times --- using the mold solid shape --- After solidifying the shape to receive the sun's drying process, fresh earth soap is born. In the process of processing, the earth soap does not add any chemical auxiliaries, and it does not hurt the hands, so the Uyghur people use it to wash the clothes of infants and young children, so that the clothes do not produce irritation to the skin of infants and young children. At the same time, the soil soap has a strong decontamination power, use it to wash the white shirt in summer, it will be washed very clean. If you have pimples and itchy skin, Uyghur people use earth soap to wash it. This is why for more than 100 years, the folk are still continuing this ancient craft