There are these categories of chemical hair dyeing


With the continuous improvement of living standards, people's pursuit of beauty has increased dramatically. Whether it is the elderly who want to cover up the signs of aging due to gray hair, or to stand out from the crowd, young people often choose to dye their hair to quickly change their image. Nowadays, the types and colors of hair dyes are also constantly enriched, and people are more casual in their choices. Hair dyeing seems to be a very daily thing.

However, hair coloring has been a familiar, "carcinogenic" and controversial topic. In recent years, adverse reactions caused by hair dyes have occurred frequently, and the data shows: "Adverse reactions to hair dyes account for 21.02% of all cosmetic adverse reaction reports," a high proportion. There are quite a wide range of chemical hair dyes. Almost 90% of the hair dye products you can see on the market are chemical hair dyes.

The hazards of chemical hair dyeing fall into the following categories: Skin allergies: This is the most common adverse reaction to hair dyeing. Some people may not have an allergic reaction to hair coloring initially. After coloring your hair a few times, an allergic reaction may occur.

The longer the use time, the higher the probability of allergies. Therefore, a skin test should be done before coloring your hair. Contact dermatitis: In contact dermatitis, scalp itching, scalp redness, and multiple rashes will appear three or five days after hair dyeing. After about four or five days, the entire face will be red and swollen.

Not only the forehead, face, and ears were red and swollen, but even the eyelids were swollen to a semi-closed state, and the whole hair would ooze fluid, which was very painful. Changes in hair texture: The hair coloring process affects the moisture imbalance in the hair as well as the denaturation and reduction of a large number of proteins. As a result, hair becomes brittle, fibers break and natural softness, strength and shine are lost.

The more times you dye your hair, the more serious the damage. Cause hair loss: urgent and chronic hair dye irritation can cause inflammation of the scalp and hair follicles, and long-term hair follicles will shrink, hair will change from thick to thin, and finally fall off. Liver and kidney damage: metal hair dyes, and some synthetic organic hair dyes, such as lead acetate, silver nitrate, benzene, naphthalene, phenol, etc.

Carcinogenicity: Most of the chemical hair dyes currently used in China contain p-phenylenediamine, which is an internationally recognized carcinogen.

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