Hair dyes can be divided into several main types according to different classification standards, mainly the following categories:
1.Permanent hair dye: Contains carbamates or similar ingredients that can change the chemical structure of hair color because they are able to penetrate deep into the hair and change its natural pigment structure. In general, permanent hair dyes usually last about 6 to 8 weeks, after which they may fade or lose their shine. For gray coverage or greater color change, the results may be more noticeable, but the durability of the color may vary slightly.
2.Semi-permanent hair dye:The color is changed by the direct adsorption of dye molecules on the surface of the hair. The durability is relatively low, the color can last for weeks to months, gradually fade, and will not significantly change the hair color.
3.bleach:Bleach is not a hair dye, but a chemical that removes the natural pigment in your hair through oxidation, making it lighter or whiter. Bleach usually contains strong oxidizing agents, such as hydrogen peroxide, so you need to be very careful when using it to avoid damaging your hair.
4.Herbal Hair Dye:Use natural plant extracts such as indigo and henna to dye your hair. It is relatively mild and less irritating to the hair and scalp, but the dyeing effect may not be as long-lasting as chemical dyes.
suggestion:To extend the durability of your hair color, it is recommended to perform regular after-dyeing care, use shampoos and conditioners suitable for after-dyeing care, and perform regular deep conditioning and maintenance, which can extend the durability of your hair color. Avoid frequent hair washing, reduce exposure to the sun, and trim your hair regularly to remove split ends and dry parts.
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