Hydrogen Peroxide in Hair Care
Natural hair colorations have many advantages, but also the disadvantage that the color is not as intense as hair colors that contain hydrogen peroxide. Gray coverage, white blonde, bright red or jet black tones, but also bright highlights in dark hair are best created with chemical dyes containing different concentrations of hydrogen peroxide.
Hair Coloring and Hair Bleaching
Hydrogen peroxide is used in products intended for hair lightening and bleaching. In hair coloring, the bleaching properties of hydrogen peroxide are used to lighten the hair, which is achieved by oxidative breakdown of the brown-black melanins (the main human hair pigments). Depending on the desired final color tone, different bleaching agents are necessary.
Hydrogen peroxide in long-lasting colorants ensures that the synthetic pigments in the hair colorant can be better absorbed by the natural hair, which intensifies the color. In oxidizing creams and hair dye developers, it opens the cuticle layer through its oxidizing effect and penetrates the structure of the hair.
Persulfates are also strong oxidizing agents that are used in the cosmetics industry as hair bleach boosters.
Permanent Wave with Hydrogen Peroxide
During the perm process, portions of the amino acid cysteine are reduced with mercaptans, which leads to the destruction of the disulfide bonds. After such treatment, the reduced hair is curled and shaped into the desired form. To fix the new shape, a mild oxidation with hydrogen peroxide is performed.
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