Lachnum melanin hair dye and preparation method thereof

Abstract

The invention discloses a lachnum melanin hair dye and a preparation method thereof. The preparation method is characterized in that: an agent A is prepared by dissolving para phenylene diamine, lachnum melanin, sodium sulfite, sodium bicarbonate, ascorbic acid, palmitic acid and ethylene diamine tetraacetic acid disodium in water and ammonia water to form an aqueous phase; adding into an oleic phase which is formed by heating to melt sodium carboxymethyl cellulose, nonylphenol polyoxyethylene ether and isopropanol or ethanol under stirring; and regulating the pH to be between 9.0 and 9.5 with the ammonia water; an agent B is prepared by adding the sodium carboxymethyl cellulose into water, aqueous solution of hydrogen peroxide and phenacetin, and regulating the pH to be between 3.4 and 4.0 by using phosphoric acid; and uniformly mixing the agent A with the agent B in the volume ratio of 1:(1-2) for use. By a hair-care dye with high safety, high efficiency and low toxicity provided by the invention, the content of the para phenylene diamine in the hair dye is reduced, the antioxidation, the antiradiation, the light protectiveness and the safety of the lachnum melanin are exerted, and natural and lustrous dying effects can be kept.

Description

technical field [0001] The invention belongs to the technical field of hair dyes, and in particular relates to a hair dye of Trichodia granulosa melanin and a preparation method thereof. Background technique [0002] With the continuous development of society and the constant changes of the times, hair dye, as a hair cosmetic, has become a necessity for some people's daily life, and is valued by consumers and scientific researchers. [0003] According to "Journal of Hengyang Normal University" (2009, 30 (6): 85-88), existing natural hair dyes are much superior than chemical hair dyes in avoiding skin allergies and side effects; but natural hair dyes are also There are some problems: First, the stability of natural pigments is poor, mainly because natural pigments are easily affected by external factors such as pH value, light (especially ultraviolet light), temperature, etc., which will change the structure or composition of natural pigments , so that its color changes; the...

AI Technical Summary

Problems solved by technology

[0003] According to "Journal of Hengyang Normal University" (2009, 30 (6): 85-88), existing natural hair dyes are much superior than chemical hair dyes in avoiding skin allergies and side effects; but natural hair dyes are also There are some problems: First, the stability of natural pigments is poor, mainly because natural pigments are easily affected by external factors such as pH value, light (especially ultraviolet light), temperature, etc., which will change the structure or composition of natural pigments , so that its color changes; the second is that natural dyes are directly deposited on the surface of the hair through their affinity with the hair, but they have not penetrated into the cortex. The fastness is not ideal; in addition, natural dyes are not only incomplete in color spectrum, but also relatively grayish in color, and the color yield is low. Dyeing the same color requires a higher concentration, and the dyeing time is too long

However, it has not been reported so far that a new hair dye can be developed by adding Trichomelanin melanin to the existing oxidative hair dye formula to reduce the content of p-phenylenediamine in the hair dye.