Why does batik turn black?

Because batik dyes are exposed to air for a long time, there will be wonderful chemical reactions and oxidation, which will make them black.

Batik is a traditional textile printing and dyeing handicraft of ancient minorities in China, which was called "Wax Valley" in ancient times. It is also called the three major printing technologies in ancient China. Batik is to dip a wax knife in wax to draw flowers on the cloth, and then dip it in indigo. When the wax is removed, the surface of the cloth presents various patterns of white flowers on a blue background or blue flowers on a white background. At the same time, in the process of impregnation, wax will naturally crack, making the cloth surface special.

Batik is a traditional skill handed down from generation to generation by Miao people in Danzhai County, Anshun County and zhijin county. It was called "Wawali" in ancient times and "Wutu" in Miao language, which means "batik clothing".