Recently, a hot news search made netizens who love hair dyeing unable to sit still!
20-year-old Linlin (pseudonym) especially likes to chase stars. In order to follow the footsteps of her idol, she often changes her hair color. In the past two years, she has had to change her hair roots and hair color every month on average. Last week, she went to the barber shop to change her hair color as usual, and a few days later she developed dense purple spots on her body, which she began to think were caused by mosquito bites in the summer.
But after applying the ointment, the symptoms were not relieved at all. It quickly developed to purple spots all over the body, and symptoms such as joint swelling and pain, abdominal pain, and darker urine appeared. I went to the hospital for a checkup and was diagnosed as Purpura nephritis . To treat Linlin, she needs to shave her hair completely, which makes her, who loves beauty, break down
The doctor said that Linlin’s illness had a lot to do with her frequent hair dyeing for a long time. What on earth is going on?
1. “The unsolved case of hair dyeing causing cancer, is there an answer?”
Whether hair dyes cause cancer has actually been debated for more than 50 years. It was first discovered by scholars Aromatic amine dyes within early hair dyes can cause cancer in animals , this discovery caused a lot of panic at the time.
Manufacturers made adjustments to the composition of permanent hair dyes in the mid-to-late 1970s to remove intermediate chemicals with carcinogenic effects, in order to allay concerns, but the controversy over the carcinogenicity of hair dyes has not stopped.
Actually, The finding of carcinogenic effects of components within hair dyes was found in animal experiments, where the results obtained were not necessarily applicable to humans, and where the doses used in the experiments were much higher than those of daily human exposure. If hair dyes are really carcinogenic, it is difficult to observe the results in a short time.
An 8-year follow-up survey of 46,000 U.S. women at the National Institutes of Health found that permanent hair dye use was associated with an increased risk of breast cancer, with a 45 percent increased risk in black women and a lower risk in white women.
However, a 36-year follow-up study of 110,000 women at the Harvard School of Public Health in 2020 noted that women who used permanent hair dyes compared with those who did not Increased risk of developing specific cancers , such as basal cell carcinoma, Hodgkin lymphoma, breast cancer, ovarian cancer risk was positively correlated with cumulative exposure, but overall cancer, hematological cancer risk was not significantly increased.
However, we cannot equate the occurrence of cancer with hair dyes alone, taking breast cancer as an example, whose occurrence is related to a variety of factors such as genetics and environment.
2. In fact, hair dyes are not only carcinogenic
Common hair dyes on the market are Temporary, semi-permanent And Permanence Three types, temporary hair dyes only stay on the surface of the hair and fall off after washing the hair; semi-permanent ones do not add oxidants and can generally be maintained for about half a month; permanent hair dyes use small molecules Dyes can be colored for a long time and can last for more than a year.
According to different hair dye raw materials, it can be divided into three types: inorganic, synthetic and plant hair dye, among which Inorganic hair dyes contain various metal compounds such as lead, iron, and copper , mainly used for white hair and black dyeing. But these kinds of hair dyes Potentially toxic , which has been banned by several countries. And “the natural hair dye that is very popular now actually contains the chemical hair dye Chen Feng, and even some of it contains Heina flower ingredients. This substance has been banned by many countries and the Food and Drug Administration”.
While current research shows that hair dyes are not directly linked to cancer, caution is still required when using them to be safe!
Regular use of hair dyes can cause hair loss Deteriorated hair quality , may cause over time Inflammatory reaction in scalp, hair follicles , allowing the hair follicles to shrink and gradually appear Dandruff, hair loss and other problems; and some chemical components in hair dyes can irritate the skin and scalp Susceptible to allergic reactions.
III How to dye your hair safely? 4 ways to help you reduce damage
If you want to dye your hair safely, you must pay attention to these details. Once done, the impact on the body can be greatly reduced.
1. Purchase formal and qualified products
Hair dyes must choose products that are formal and meet the standards. They need to have the words “National Makeup Year No. X”. If they are imported products, they need to have the words “National Makeup Year No. X”.
2. Prepare before dyeing
Before hair dyeing, take some hair dye 48 to 72 hours in advance, dilute it with water and apply it on the inside of the elbow and behind the ear, and observe that there is no allergic reaction before use. It’s best not to wash your hair before dyeing it, the oil secreted by the scalp reduces damage to the scalp and can also color better.
3. Control frequency and chroma
The frequency of hair dyeing should not exceed 2 to 3 times a year, and at the same time, try to avoid dyeing too bright colors. The brighter the color, the higher the content of harmful substances in it. When you need to make up your hair, it’s best not to make up your whole head, just make up one root.
4. Post-dye care
You can wash your hair a few more times after dyeing your hair, this can reduce the residue of hair dye, it is best to use shampoo and conditioner with repair function, protect the hair.
Hair dyes contain a lot of chemicals, so you must pay attention to controlling the frequency for daily use, and at the same time choose regular products. Generally, they will not bring excessive risks to health, so there is no need to worry.
Disclaimer: All photos used in this blog are generated by artificial intelligence (AI). These images are original creations produced by AI technology and do not depict real people, places, or events. They are provided for illustrative purposes only and cannot be claimed or used as real photographs.
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