The risk of developing bladder cancer is double the monthly hair dye
Previous studies have shown that hairdressers have a higher than average risk of developing bladder cancer. The first study on this topic was published in February 2001 in the Journal of the International Journal of Cancer.
Researchers at the University of California at Los Angeles had 1,514 people with bladder cancer and many people of the same age were healthy. Gethealthyfreedom Women who stripped their hair at least once a month were more likely to have bladder cancer than more than twice as many women who did not get their hair stained.
If you dye your hair for a long time, for many years, the risks will continue to increase. For example, anyone who applies hair color every month for 15 years or more increases their risk to 3.3 times. Stylists who worked in their profession for at least 10 years were five times more likely to develop bladder cancer than people who did not have hair dyes.
The risk of cancer can not be ruled out with hair dye despite the list of prohibitions
Subsequently, in 2003, the European Commission issued a list of bans for almost 200 of the most dangerous substances that were present in hair dyes at that time. In the list of safe substances classified (with some limitations) for hair coloring, only 70 remained. But even with these it can not be said definitively that they do not represent a risk of cancer for humans. Even if they do not cause cancer, they are not healthy at all, since many are considered allergens, for example, p-phenylenediamine and 2,5-toluenediamine.
The effect of chemical hair dyes is still partially unknown.
Danish researchers in the journal Dermasis Dermatis wrote in August 2006 that hair dyes for permanent discoloration represent another risk: they must be mixed with two ingredients immediately before applying hair color. Now only the real color appears. However, according to the researchers, there is a large amount of original materials that remain in contact with the user, not only during but also after dyeing the hair, especially when washing the paint.
In addition, intermediates are always established in the chemical mixing and dyeing process. The effect, whether harmful or allergenic, is still unknown for these intermediate compounds.
Each chemical hair color contains allergens
The University of Arizona analysis of 107 colors from 10 leading companies in April 2014 showed that 106 contains at least one potentially sensitive substance. On average, however, hair dye contains six substances that can cause contact allergies:
P-phenylenediamine (PPD) was found in 78% of the products, 89% resorcinol, 75% m-aminophenol, 60% p-aminophenol, and 21% 21-toluenediamine. That the potentially harmful substances in hair dyes are nothing special. Yes, a total of 30 allergens commonly used in hair dyes were found.
The hair dye and hair remnants increase the Gethealthyfreedom chemical load on hairdressers
In 2014, Swedish researchers published a study that examined the chemical exposure of hairdressers. These are known for the amines that cause cancer and the allergens prone to full working life. It turns out that the more cancer-causing substances are discovered in hairdressers’ blood, the more they dye their hair with their clients and put them in permanent waves.
For the study, 295 of the hairdressers were examined, 32 were dyed regularly and 60 did not use any hair dye last year. Other factors that could affect the result were also considered, such as, for example, the potential poison load at work or during free time.
Therefore, one chose a much larger number of hairdressers, because he also wanted to examine dose-dependent relationships, one of which generally required a larger number of participants.