Can long-term hair dye cause cancer? Black hair dye is the most dangerous? Reminder: Safe hair coloring, pay attention to 4 points

In ordinary life, many people will dye their hair for beauty, but improper hair dyeing is likely to hurt life.

Xiao Zhang, who is in her early 30s, is a female teacher. She wanted to change her look during the holiday, so she went to the barber shop to dye and perm her hair, but she lost her life because of it.

The reason turned out to be that the hairdresser did not give her an allergy test before dyeing her hair, which caused her to develop an allergic reaction . First, her head was red and swollen , but it was not treated in time. Later, even when she was sent to the hospital, she was not treated.

1. Does long-term hair dye cause cancer? Black hair dye is the most dangerous?

Regarding hair dyeing, there have been rumors on the Internet that long-term hair dyeing will cause cancer. Is this true?

In fact, most of the hair dyes used on the market today are chemical hair dyes , which are a little more risky than plant hair dyes.

Chemical hair dyes contain p-phenylenediamine . If you come into contact with this substance in a short time, it may cause poisoning. However , the standard content of p-phenylenediamine in Chinese hair dyes is generally 2%-6%, so it will not cause acute poisoning. .

The World Health Organization has classified p-phenylenediamine as a three-category carcinogen . Long-term exposure to this substance will cause cancer risks, but it refers to long-term excessive exposure to hair dye products containing p-phenylenediamine, which may lead to cancer risks. It's not that the occasional hair dye can cause cancer, just be careful with allergies.

Also, is black hair dye the most dangerous? Tan Yanhong, an attending physician in the dermatology department of Beijing , pointed out that because the black hair dye contains the most phenylenediamines and heavy metal salts , the risk will be higher.

Second, dyeing hair, will it accelerate hair loss?

In addition to the claim that hair coloring is carcinogenic, it is said to accelerate hair loss. Is this true?

In fact , the principle of action of hair dye is to open the scales on the surface of the hair, infiltrate the dye and then color . In some cases, hairdressers will also bleach the hair beforehand in order to make the color last longer. If you dye your hair frequently, it will cause the hair follicles to be constantly irritated by chemical products, which may accelerate hair loss , and may also lead to dry hair, broken hair, allergic reactions, and more.

3. Safe hair dyeing, pay attention to 4 points

Although long-term hair dyeing will have certain hazards, it does not mean that you cannot dye your hair. What we should pay more attention to is to dye your hair safely. The following points must be remembered.

1. Buy qualified products from regular supermarkets

When purchasing hair dye products, you must choose qualified products from regular supermarkets. It is recommended to choose products with the "Wei Zhuang Special Size" logo.

2. Be sure to do a sensitivity test before dyeing your hair

It is recommended to do a sensitivity test before dyeing hair, apply a small amount of hair dye to the inside of the arm, the back of the ear, etc. If there is no allergic reaction after 72 hours, it can be used, and people with sensitive skin cannot omit this step.

3. It is best to avoid skin and other parts when dyeing hair

In the process of dyeing hair, it is necessary to avoid the hair dye coming into contact with the skin. If you accidentally touch it, you must remember to wipe it off in time. People with sensitive skin can take precautions before dyeing.

4. Use professional hair care products after dyeing

After the hair is dyed, wash the hair dye clean in time, and then collect special cleaning products for care.

Everyone has a love for beauty. Hair dyeing is no stranger to many people, but many people worry that long-term hair dyeing will cause cancer. In fact, occasional hair dyeing does not need to worry about cancer, but frequent hair dyeing does lead to hair loss and dry hair. Etc., it is recommended to choose safe hair coloring steps.

References:

[1] [Information] It is said that dyeing hair can cause cancer, is this true? ! .CCTV Life Circle.2020-06-12

[2] Not just carcinogenic! The dangers of frequent hair dyeing are beyond your imagination! Hair loss, also ranked second... Popular Science China. 2021-02-05

[3] Safety Guide for "Dyeing Hair" a few years ago! The Consumer Protection Committee reminds you to do 4 points. Life Times. 2022-01-23

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