After hair dyeing, it will be more carcinogenic when washed in the haze, and it can be done in time.
Guide: Hair dyeing can make the gray-haired old people reappear, and let the beautiful women shine.
However, according to the British “Daily Mail” reported on February 24, a study published in the authoritative scientific journal “Materials” shows that instead of hair dye products used in barber shops, or hair dyes sold in supermarkets, all containA harmful chemical secondary amine.
Secondary amines are easy to react with epoxy, aldehyde, and acid gases, etc., and can be used as dye fixatives to stabilize the dye adhesion effect.
It can penetrate into the skin and hair, stay for weeks, months, or even years, and react with tobacco smoke or exhaust gases in the air to form the strong carcinogenic chemical nitrosamine.
Professor David Lewis, a researcher and expert in chemical dyes, said: “Although it is not certain how much nitrosamines will be produced, it is clear that there are many potential dangers to hair dyeing.
“Hair dyes have been reported to be linked to a variety of cancers, including breast, bladder, uterine, brain, and leukemia.
As early as 2009, a female woman in the UK used hair dyes more than 9 times a year and was at risk for blood cancer. One year later, the European Commission banned 22 hair coloring products that cause bladder cancer.
In addition, the hair dye also contains heavy metal salts. Once it enters the body, it is difficult to re-externally accumulate in the body for a long time, which will cause poisoning, cause dizziness, headache, fatigue, numbness of the limbs and other poisoning symptoms, and may enterThe liver, kidneys and brain disrupt the function of these organs.
Therefore, researchers suggest that you should not dye your hair.
If you must dye your hair, leave it at least 3 months apart, and it is best to go to a professional barber shop.
Do not apply oil for a week before dyeing your hair. Do not wash your hair on the day of dyeing. The oil secreted by the scalp has a protective effect. If the scalp has wounds and ulcers, it should not be dyed. Skin sensitivity tests should be done 48 hours before dyeing.Apply lotion or petroleum jelly to prevent the hair dye from touching the skin and causing damage. If there is a slight adverse reaction to the scalp during hair dyeing, stop it immediately.
Li Hongzhu, an associate professor at the Tianjin Academy of Pharmaceutical Sciences, recommends that if you look forward to being in a smoky environment after dyeing your hair, you should wash your hair frequently to remove the harmful substances adsorbed on the hair in a timely manner.
It is best to wear a hat when traveling on a hazy day and take off your jacket immediately after entering the house to reduce the harm of dust and dirty air to the body.
The frequency of hair dyeing in February is not to overdose the number of times. Usually after one hair dye, when the root part of the hair grows 1-2 centimeters of new hair, you can make up dyeing.
This period is usually around 6-8 weeks.
In this way, even if the color of the hair is maintained uniform, it will not be too much dyed.
Before dyeing the hair, you can apply a layer of skin care products on the skin around the hairline to prevent darker colors from sticking to the skin and making it difficult to clean.
It can also be rubbed a little, and it can be easily washed off in case of any contamination.
After dyeing your hair, wash your hair thoroughly so that no hair dye remains on your hair.
When washing your hair, be careful not to scratch your scalp with your fingers to avoid causing allergies.
The color after dyeing the hair can generally be maintained for 2 months. After 2 months, after the steps such as shampooing, sunlight and humidity in the air, natural oxidation will occur, resulting in loss of pigment and poor hair quality.
In addition, the hair is 1-1 per month.
The growth rate of 5 cm is increasing from the growth rate of the hair, and the time for replenishing and dyeing the hair should also be 2 months.
Experts are especially good at rubbing the hair dye on the skin behind the ears before dyeing the hair. If there is no abnormal reaction after 2 episodes, you can dye the hair.
Also note that different brands of hair dyes should not be used together, as chemical reactions may occur.
Decolorizing hair loss after dyeing and drying hair 3 answers to post-dye care issues More and more hairstyles are appearing in our eyes, and the opportunities for hair dyeing have become more and more.
Hair coloring is enough to increase your fashion and change your style.
However, hair care after dyeing is often the most difficult to maintain, and hair loss, color loss and frizz often occur.
To alleviate this situation, there are several points to note.
When doing hair care, you should avoid drying your hair. It is best to use a shampoo containing alkali and softness in the daily routine.
Shampoos and conditioners for dyeing hair can stabilize pigment particles, making it difficult to lose them quickly.
In addition, the heat of the hair dryer will also accelerate the pigment precipitation, so be sure to apply some hair care accessories before the hair dryer to maintain stable pigment conversion in the heart.
Two methods to treat hair loss: First, food therapy 1) Yuzu nuclear treatment of hair loss: If the hair is yellow and alopecia areata, you can use 25 grams of grapefruit kernel, soak in boiling water for 24 hours, apply 2?
3 times to speed up hair growth.
2) Ginger treatment for hair loss: Cut ginger into pieces, wipe repeatedly on alopecia areata, persist 2-3 times a day, and stimulate hair growth.
Second, massage care 100 combs of hair every morning can not only stimulate the hair follicles, but also make the hair seam well ventilated, because the hair is most likely to sweat and is covered by heat, so combing the hair often can prevent hair loss and dandruff.
Treatment of dry hair after dyeing: When washing your hair, wash your hair with shampoo after washing your hair, without conditioner, and then evenly apply it on the hair with a hair mask, then wrap it with a hot towel 7, 8Minutes can be used. This can compress the “steaming” effect of the hair salon for perming. It should be noted that it is best to dye the hair after perming for about a week to reduce damage to the hair.
After dyeing hair, pay attention to diet and nutrition, calcium and vitamin foods, which is conducive to the maintenance of hair quality.
a, eat more sulfur-containing proteins: eggs, milk, lean meat, beans, fish and shellfish, yeast and so on.
b, eat more vegetables and fruits: the interior contains many trace elements necessary to make up hair.
c, eat more vitamin B6, vitamin E: vitamins can prevent gray hair and promote hair growth.
Examples include oatmeal, peanuts, beans, bananas, yeast, honey, eggs and pork liver.
Do not use the hair dryer again. This will spread the sebum on the entire hair evenly, which will help protect the hair and keep its luster.