Bleaching of Black Human Hair

Bleaching of black human hair has been studied systematically. On the basis of experimental data the technology of human hair bleaching through five-processes was established. The optimum technology of improving the whiteness and reducing damage on fibers has been found. The technology can provide good luster, smooth handle and relatively high strength retention to human hair used for wigs or drama articles, meeting the needs of people better. Moreover, it also has important reference value to bleaching of other colored fibers.