Long-acting gold nano-cluster fluorescent hair dye and hair dying method

Abstract

The invention provides a long-acting gold nano-cluster fluorescent hair dye and a hair dying method. The method comprises the following steps of: on the basis of oxidation-reduction reaction generatedby gold ions and hair, proteins on the surface of the hair are taken as a reductant, cysteine which occupies most parts of keratin contains a great quantity of disulfide bonds, reductive amino acids,including fractured cysteine with sulfydryl and the like, reduce Au (III) into Au (0), a protein structure in the hair does not change, the own spatial range limitation function of the protein structure is used, so that a luminous gold nano-cluster embedded into the natural hair is gradually generated, and finally, the hair can emit red fluorescence. Compared with the natural hair, the hair dyedby the gold nano-cluster fluorescent hair dye has better mechanical performance, the dyed luminous hair exhibits good fluorescent stability, and fluorescence intensity does not change after the hair dye is placed at a constant temperature for more than one year. The fluorescence intensity does not obviously change after the hair is cleaned by a shampoo, is washed by clean water and is dried for 30and more than 30 times, and the hair only has a slight photobleaching phenomenon after the hair is continuously irradiated by ultraviolet rays for 24 hours.

Description

technical field [0001] The invention belongs to the technical field of hair dyes, and in particular relates to a long-acting gold nano-cluster fluorescent hair dye and a hair dyeing method. Background technique [0002] With the continuous improvement of living standards, people pay more and more attention to their own image. In addition to the most basic needs of dyeing white hair black, dyeing hair into other colors except black and dyeing hair to meet the needs of various occasions Entertainment needs have also become a new trend in hair dyeing. [0003] Commercially available hair dyes generally have complex ingredients, containing phenylenediamine, an internationally recognized carcinogen, and the heating process of hair dye can easily cause benzene organic compounds to enter the human body through the scalp, causing various diseases. [0004] Entertainment activities in bars, KTV and other places are often less than the needs of daily life, and most people choose to c...

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