Method for whitening and decoloring black human hair

Abstract

The invention discloses a method for whitening and decoloring black human hair. The method is characterized by comprising the following steps: cleaning black human hair through a detergent; adding water for soaking; preprocessing through ultrasonic wave; preprocessing by discharging through plasma under low temperature in a vacuum condition; correspondingly dissolving papain and neutral protease in a phosphate buffering solution; then sequentially adding the preprocessed human hair for correspondingly dipping; washing with clean water; transferring the scale-removed human hair into a catalyzing processing solution in a closed environment; increasing the temperature; taking out; washing with water; transferring into a penetrant solution; heating; adding catalase to a whitening solution; adding the human hair processed by coordination catalysis and penetrating; whitening in constant-temperature water bath; regulating the pH to be neutrality; taking out; washing with water; processing through a fluorescent whitening agent solution; washing with water; and drying through an air blasting drying box.

Description

technical field [0001] The invention relates to the field of hair product processing, in particular to a method for bleaching and decolorizing black human hair. Background technique [0002] In recent years, the demand for wigs in the international market has been increasing day by day. In order to avoid scalp allergies and improve the wearer's comfort and aesthetics, wigs made of human hair are more precious. It is understood that the quality of wigs made of Asian hair is better, because Asians have the custom of storing hair, and long hair is more convenient for weaving wigs of various specifications and styles. In order to meet the needs of the international market and give wigs a variety of colors, it is necessary to bleach human hair. However, Asian hair has high and dark pigment content, and it is necessary to remove the existing pigment on the basis of maintaining the original quality of the hair. A large amount of melanin becomes a big problem. Chlorine-containing ...

AI Technical Summary

Problems solved by technology

In order to meet the needs of the international market and give wigs a variety of colors, it is necessary to bleach human hair. However, Asian hair has high and dark pigment content, and it is necessary to remove the existing pigment on the basis of maintaining the original quality of the hair. A large amount of melanin becomes a big problem

Chlorine-containing reagents are often used in the traditional hair scale peeling process, which will produce a large amount of absorbable organic halides, and the ammonia nitrogen content in the wastewater discharged from the bleaching process exceeds the standard