The effect of chemical hair dyes is still partially unknown.
Danish researchers in the journal Dermatis Dermatis wrote in August 2006 that hair dyes for permanent discoloration carry other risks: two elements must be mixed 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, the intermediate is always established in the chemical process of mixing and dyeing. The effect, whether harmful or allergic, is still unknown for these intermediate compounds.
Each chemical hair color contains allergens
The University of Arizona analysis of 107 colors of 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 percent of the products, resorcinol at 89 percent, m-aminophenol at 75 percent, p-aminophenol at 60 percent and 2.5-toluenediamine at 21 percent. That the potentially harmful substances in hair dyes are nothing special. Yes, a total of 30 allergens commonly used in hair dyes were found.
Hair dye and perfume increase the chemical load in 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 that are exposed to all practical life. It turns out that keto trim the more cancer-causing substances are detected in hairdressers’ blood, the more they dye their hair with their clients and put them into permanent waves.
For the study, 295 hairdressers were examined, 32 were dyed regularly and 60 did not use any hair dye last year. Other potential factors that could affect the result were also considered, such as: possible toxic contamination at work or during free time.
Therefore, one chose a much larger number of hairdressers, because he also wanted to examine the dose-dependent relationships, which generally required a larger number of participants.
Carcinogens in the blood of hairdressers.
The levels of these aromatic aromatic amines, called O- and m-toluidines, were higher in hairdressers’ hair and more pigmented for hair (especially in light colors) with their clients. Unexpected, so researchers, was the frequent use of permanent wave factors and increases the concentrations of x-toluidinas in the blood of the stylists.
In a previous study, scientists examined workers in a chemical factory and found that increased exposure to tuloidines was responsible for the increased risk of bladder cancer, so hairdressers could fear this fear.
The Swedish researchers recommend a new analysis of the components of the pigment and the elimination factor to exclude that the users of these products are regularly overloaded with carcinogens.
For example, in a Turkish study, 54 hair dyes were studied. The dose of o-toluidines was sometimes 100 times higher in the dark hair dye than allowed, and up to 500 times higher in the hair dye.
Therefore, the load of the hair dyes can vary a lot with the combinations of tulifins from one product to another. However, hair dyes are clearly identified as sources of chemicals that pollute the body.
You should always wear gloves when dealing with these funds, be it a private user or a hairdresser. The activities to be carried out without gloves, such as the haircut, must be done before dyeing or placing a permanent one.
Cancer risk of hair dyes: Yes or no?
But in 2004, researchers wrote in the journal Food and Chemical Toxicology that despite the increase in the use of hair dyes, it was not possible to observe any excessive increase in their sensitivity, neither by hairdressers nor by private users . Tests of genetic toxicity in the laboratory (the examination of whether the substance is mutagenic) will often produce positive results, but this does not necessarily mean that the substance can cause cancer in humans.
Although hair dyes in the 2001 study were associated with an increased risk of bladder cancer, several prospective studies in larger populations found no negative correlation between these two factors.
Cloning studies and epidemiological studies