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Taking natural hematoxylin as main raw material, this study inspected the impacts of dyeing temperature, time, pH value and mordant concentration on dyeing to white yak hair. The results show that this natural pigment for white yak hair dyeing performs a direct effect. Temperature is the most important factor. Aluminum and zinc ion can dye hair brown, while hair color turns to be black under iron ion. Temperature and concentration of mordant are important factors. This test provides preparation of hair dyes in different colors with theoretical knowledge.
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