New Year, New Atmosphere.
In order to have a sense of New Year's Eve ceremony, many people like to use their hands and feet on their hair.
After washing, cutting and blowing, there will be an advanced operation of hair coloring.
The old man covers his white hair, the young man chases the trend... But as long as the wallet allows, I don't mind The effect of Tony's teacher dyeing the head.
But......
The news of "hair coloring endangers health and safety" is frequent, and it is of course happy to become beautiful and handsome, but every hair dyeer is also secretly worried about the risk of hair coloring that they may encounter.
The health risks that hair coloring should prevent are not carcinogenic
Chemical ingredients, pungent taste, burning skin... The experience of using all kinds of discomfort makes hair dye inexplicably tied to "carcinogenic".
But in 2020, Harvard University broke with this bias in a paper published in BMJ, the world's top journal of integrative medicine— after 36 years of follow-up of 120,000 American women, found that the association between individual use of permanent hair dyes and most cancer risks and cancer mortality was low.
In addition, the World Health Organization only lists the commonly used ingredients of permanent hair dyes such as p-phenylenediamine and resorcinol as three types of carcinogens, which means that there is no scientific evidence to confirm that they are carcinogenic, and the carcinogenic risk is comparable to that of tea.
From these two conclusions, the fear of cancer caused by hair coloring is unnecessary.
However, this does not mean that people can be infected as much as they want, these ingredients are not carcinogenic but have other risks.
P-phenylenediamine is toxic, irritating, easy to cause skin allergies; resorcinol swallowing is harmful, irritating the skin, seriously irritating the eyes; toluene 2,5-diamine swallowing is toxic, harmful to inhalation, harmful to skin contact, may cause skin allergies...
It can be seen that they all have the characteristics of being easily sensitive.
The same is true, in 2017, the National Cosmetic Adverse Reaction Monitoring System received a total of 2688 adverse reactions/incident reports of hair-colored cosmetics, accounting for 21.02% of all special cosmetic adverse reaction reports (12790).
People who are allergic to hair dye will experience itching, burning, swelling, tightness, dryness, dizziness, headache and other symptoms.
And severe allergies, and even fatal cases, there have been news reports before: a 47-year-old female teacher in Dalian dyed after 10 days of hair coloring, died on the way to allergy rescue.
Compared with Schrödinger's carcinogenesis, real sensitization injuries occur every year, which is a safety risk that hair dyeers must be vigilant about.
Safe hair coloring is done well at 5 points
1. Do a good allergy test
When using a hair dye for the first time, do an allergy test. Apply a little hair dye on the inside of the forearm or behind the ears, observe for at least 48 hours, and there is no response before you can use this hair colorant.
Standby observation for 48 hours is a hard condition, do not dye your hair early because you are too lazy to delay the time in the barbershop.
American sister Kelly Kruppner is a lesson in the past, although she did an allergy test, but only ten minutes to urge the barber to dye her hair, and the result was to get up the next day...
The American girl's hair dye allergy head swelling has become 2 times larger
Originally with a delicate little face, her face swelling was almost twice as big as before, and even her eyes were almost difficult to open. In addition to swelling of the face, the scalp also shows symptoms of burns.
According to the doctor's judgment, the girl's scalp was seriously damaged, and it is estimated that it will take at least one month to fully recover.
Reluctant to tony's craftsmanship, and do not want to delay the time, it is recommended to bring your own hair dye, in advance at home to do allergy testing. In short, no matter how troublesome you are, don't risk your own life safety.
2. Do not be superstitious about pure plant hair dyes
First of all, the conclusion, but where permanent hair dye, there is no real "pure plant".
In 2020, a comparative experiment by the Shanghai Municipal Consumer Protection Commission on 41 hair dyes found that all hair dyes that promoted the concept of "plant" were all detected with chemical components, and none of them met the standards expected by consumers.
So don't listen to the propaganda of the merchant, no matter how to shout "safety", the test that should be done can not be missed.
3. Do not dye your hair during special periods
Hair color is not recommended for underage, pregnant or nursing women, and it is best not to dye the head and face with skin diseases such as folliculitis and dermatitis and skin damage and those with weakened immunity.
4. Reduce skin irritation
Whether you have allergies or not, hair dyes can irritate the skin.
Beauty lovers are advised to:
These measures are beneficial in reducing skin damage.
5. Mild complementary color
Most people who dye their hair multiple times a year actually only need to replenish the color of their hair roots, so it is recommended to reduce the dosage of hair dye and choose a temporary hair dye or semi-permanent hair dye with a simpler and milder ingredient to avoid the risk of sensitization and poisoning.
If you feel that a box of hair dye only replenishes the root of the hair is too wasteful, you may wish to buy products such as hair dye sticks, targeted color repair, and will not cause unnecessary waste.
【References】
1. What are carcinogenic hair dyes? 16 Popular Hair Dye Reviews Solve Your Long-Standing Confusion!.Dad Review.2021-09-09
2. American girls have severe allergies after dyeing their hair, and their heads are swollen twice as large! Ignored an important operation!.2021-11-09.
3. How terrible is the allergy caused by hair coloring? Professor Yang Xichuan of the Department of Dermatology.2019-01-30