Currently, there are four groups of products that are used for bleaching and coloring hair.:
- discoloring dyes;
- chemical dyes;
- tint dyes;
- vegetable dyes.
Dyes containing metal salts are not used. Before you dye your dark hair in a lighter tone, you need to lighten it beforehand. Special lightening agents are used here, bleaching hair by 3-5 tones or more. The first group of substances with bleaching and discoloring composition is used together with an oxidizer, which is hydrogen peroxide (hydrogen peroxide, perhydrol, H2O2). This liquid is colorless, decomposes into water and oxygen. As a result of the reaction of the oxidizer and the hair pigment, the hair pigment is partially (the hair is lightened) or destroyed (the hair is completely discolored).
A separate group of bleaching compounds exists because they are always used when coloring hair, as well as independently.
Any lightening compounds have a pigment-destroying effect, so after using them, I wash my head with mild shampoos, use balms, and hair treatments.
The second group of dyes are chemical dyes. A chemical reaction occurs with the keratin of the hair, as a result of which the color changes. These dyes also contain hydrogen peroxide. Thus, a stable, durable hair coloring is ensured by chemical incorporation into the structure of the hair pigment. Since these dyes are not safe for hair health, hair treatment will be necessary in the future, so their use is limited when coloring gray hair. In other cases, it is more effective to use more gentle dyes, which belong to the third group – physical dyes. They consist of chemically inactive substances, including tinting and tinting shampoos, mouthwashes, foams and balms. The effect of these dyes extends only to the surface of the hair without chemical interaction with keratin. The condition of the hair and its porosity affect the strength of the coloring. Coarse hair with low porosity is colored from the outside, which indicates a low strength of coloring. In porous hair, coloring occurs in the deeper layers of the hair, thus filling the existing voids, which makes it difficult to wash out the coloring agent.
Shade shampoos should be used with caution on gray hair, as there may be an unnatural hair color. There is practically no effect on dark hair. Soft paints are more resistant.
The fourth group consists of natural, natural dyes (henna and basma), which do not change the structure of the hair, penetrating them with the help of biologically active substances, providing permanent coloring. They also have a healing effect.
Hair coloring is a complex process that only a highly qualified master can do. Сравнение коэффициентов melbet с другими бк доступно на reklama-impuls&melbet .
