Hair coloring is a particularly common modern makeup method, whether it is young people or some middle-aged and elderly people will be appropriate hair coloring, can add points to their external image, can play a role in enhancing self-confidence.
But in recent years, there have been more and more reports about the carcinogenicity caused by frequent hair coloring, which has led to many people being afraid to dye their hair. So, often dyeing hair causes cancer, is there any scientific basis?
Is there a scientific basis for the carcinogenic causes by frequent hair coloring?
No matter which kind of hair dye, it is necessary to add a colorant, and the component of the colorant is phenylenediamine, which is a carcinogen. During the process of hair coloring, the hair dye will be applied to the person's hair, which needs to be heated, and these hair dyes will stay on the hair for a period of time.
During the process of heating and staying, the phenylenediamine substance in the hair dye will penetrate into the scalp and also enter the various organs with the blood circulation. If you dye your hair frequently, there will be more and more phenylenediamine in the organs, and it will play a carcinogenic role.
An article in the US "Cancer" newspaper showed that men who used permanent hair dyes for a long time had a higher risk of developing prostate cancer.
A study in the journal International Cancer showed that women who use permanent hair dyes for a long time have an increased risk of breast cancer. In addition, for people who dye their hair regularly, the probability of developing uterine cancer, bladder cancer, brain cancer and leukemia will be relatively increased.
It can be seen that regular hair coloring is indeed carcinogenic. However, if you control the number of hair coloring and adopt the correct hair coloring method, you can minimize the risk of cancer.
How to dye hair healthier?
1. Prepare for hair coloring
Before coloring the hair, do a sensitivity test on the hair dye and apply a small amount of the dye to the skin behind the ears and the back of the hands. After waiting for a period of time, continue to use if there is no allergic reaction. Do not wash your hair before dyeing it, and apply some vaseline to the scalp.
2. Do not mix hair dye
Many young people like to mix different brands and different colors of hair dyes when dyeing their hair, thinking that the resulting hair color will be very personalized.
But in fact, the ingredients in each hair dye are different, if mixed, it will produce some chemical reactions, which will produce more harmful substances. Not only will the chance of allergies increase, but the damage to the organs will also increase. Therefore, when coloring hair, only one hair dye can be used, and a hair dye with quality assurance should be selected.
3. Reduce dwell time
Do not apply hair dye to the scalp, just stay at about one centimeter at the root of the hair. After applying it all, let the hair dye pause on the hair for a while according to the instructions of the hair colorant, and then wash it off with warm water. Be patient when washing, and wash away all the residue of the hair dye until the water used to wash your hair is clear.
All in all, hair dyes contain a lot of phenylenediamine carcinogens and contain some other heavy metal particles. If you dye your hair frequently, it will increase the risk of various cancers, so there is a scientific basis for frequent hair coloring and carcinogenicity.
Therefore, for people who like to dye their hair, in addition to reasonably controlling the number of hair coloring, such as only dyeing hair once a year, the above 3 points should be done when coloring hair, which can minimize the impact of hair coloring on the body.