If it’s about the personal grooming of yours Is there anything more rewarding than getting crowned with hair that is long, shining hair? Do you split your time between good and bad days? Do bad hair days make you feel depressed and irritable while a great one can propel you to the top of the mountain. You’re not alone! You’re not alone!
As per Hoovers(r) the number of approximately 65,000 salons for hair care across the United States with combined annual revenue of $19 billion! A tiny portion of these sales is for haircuts, but the majority of these dollars are invested in… the color of your hair.
If you’re pregnant or expecting or you hold an employment opportunity in any of the salons listed above, you should take the time to read these guidelines. More than 20 million Americans predominantly women get exposed to the hair dye every year. It is estimated that 35 to 40% of women across the United States and Europe use hair dyes. Solutions are used either by a hairdresser in a salon or by people who buy at-home products.
Based on IARC International Agency for Research on Cancer (IARC) Concerns concern their safety. drugs. Why? because some of the components used in hair dye are believed to be carcinogenic as well as Teratogenic (causing abnormalities in foetuses). There are reports of hairdressers who have a higher chance of spontaneous abortions and congenital malformations, as well as developmental and cancer-related issues in children are common. In the 1980’s, older research mention that women and men who are exposed to dyes for hair in their jobs may be at risk of having an increased chance of developing leukemia as well as bladder cancers, the GI tract, ovary as well as respiratory system. Nasca has reported in Journal of the NCI, that there is a greater risk of breast cancer among women who dye their hair.
Women throughout the world who frequently use cosmetics are concerned about the possibility of exposure to themselves and their fetus due to the carcinogenic chemicals found within these items. Many women are afraid to use colorants in pregnancy due to concerns about chemical exposure and absorption, which could pose risks to the foetus.
It is also important to note that women are giving babies later which means that the application of hair dyes will increase in popularity. The combination of hormonal hair growth in pregnancy, along with the increasing need to color as women age will surely lead to an increase in usage of these dyes.
With that in mind, I decided it was an excellent concept to create an essay that reviewed all the research on the safety of hair dyes, so that you can make the best choice for yourself regarding whether or not you should apply these products. Conclusions, however, must be based on the method used to apply dye (personal or hairdresser) and the color used as well as the frequency of coloring and the different characteristics of various components that are that are available.
What is the classification of hair dyes?
There are three types of classifications:
Permanent,
Semi-permanent
Temporary
The chemical composition of hair dye determines the classification it is placed.
Permanent dyes are most common and make up around 75 percent of the hair dyes. They are created by the oxidation of hydrogen peroxide, a precursor to dyes which permeate the hair’s fiber, causing the color that is associated by the pigment. The permanent hair dyes usually applied using a brush or by hairdressers. Permanent hair dyes can cause more dramatic changes to hair color. They are not washed out, and they remain until hair grows or is cut.
Semi-permanent dyes account for around 20 percent of all dyes. They directly reach the hair’s cortex, without the use of the oxidizing agents. Typically, the color lasts between 6 and 12 washes. The dyes, which are usually applied with a hand typically used to cover grays or to enhance the natural color. They can be bought at the store.
Temporary dyes make up around 5 percent in all hair colorings, are employed for just a single wash. The hair coloring is put in the cuticle on the hair and is left there until it’s washed out. It will generally not lighten hair , but it can be it can be used to increase the natural hair color, tint it with a different color, or provide highlights to the natural or tinted hair. It can also be employed to cover a small proportion of gray hair, or remove yellowish hues from gray or white hair.
What hair dyes cause concern during pregnancies?
Numerous studies have demonstrated the risk for developing childhood brain tumors (CBT) due to exposure to N-nitroso compound, typically present on hair colorants.
There are two broad classes of N-nitroso compound
nitrosamides
nitrosamines
Nitrosamides are unstable , and don’t require enzyme activation and are prone to develop tumors at the site of exposure. In rats, they traverse the placenta and can cause neurocarcinogens.
Nitrosamines, which are commonly present in cigarettes and in beer, are regarded as carcinogenic substances.
The chemical components within hair dyes comprise aromaticamines that transform into Nitrosamines. Nitrosamines require bioactivation, and may trigger growth of tumors at places other than the original exposure location. Hair dyes are regarded as NOC-related aromaticamines. They include ammonia-based solutions, coal-tar dyes, hydrogen peroxide and lead acetate. Numerous studies have classified these chemicals as carcinogenic to animals when they are administered orally as they alter DNA. However, there is “inadequate evidence” to determine the possibility of human carcinogenesis when applied to the skin.
Other toxic chemicals found in hair dyes include phthalates, cobalt salts, formaldehyde releasing preservatives, lead acetate, nickel salts, 1,4-dioxane, diethanolamine/triethanolamine, and parabens.
How can exposure to the fetus take place in a pregnant woman who utilizes hair dyes?
The fetus is exposed in the course of daily use, as a lot of the chemicals that are used can be absorbed by skin. The specific characteristics of dyes and their ability to penetrate skin affect their toxic effects. Exposure can also happen via oral, ocular or inhalation methods that traverse the placenta and impact the foetus. A lot of these chemicals could store in body fats and then enter the mothers milk.
What types of toxicities are reported during the course of pregnancy?
There have been a number of contradictory results from the hair dyes and a variety of childhood cancers.
A few studies have revealed that there is a link between the maternal hair dye and an increased chance of developing cancer in children. The developing nervous system of the fetus was found to be the most vulnerable to mutagens and carcinogens. If exposure occurs in the development of the nerve system in the first trimester, it could cause the nervous system to be more vulnerable to brain and cancer tumors.
Neuroblastoma which accounts for 6 to 10 percent of all cancers in children across the globe, are among the most prevalent cancers that affect children in the initial year of their lives. A threefold increase in risk was discovered among children exposed to hair dyes in pregnancy, according to an article by Kramer in the Journal of the National Cancer Institute in 1987. The increased risk was verified by McCalls article in 2005’s Cancer Causes and Control. Wilms tumor, which is a kidney cancer that is prevalent in children, carried four times the risk in a study conducted in the journal of Bunin on Cancer Research in 1987. A number of the chemicals that were used in 1987 for hair dyes are now eliminated (2-4-diaminoanisole, 4-amino-2-nitrophenol along with HC Blue No.1) but other compounds found that are in the N-nitroso aromaticamines frequently employed in hair dyes remain present, and are carcinogenic to animals.
Other studies conducted on research conducted on the West Coast have found no relationship between the use of hair dyes prior to and during the pregnancy. (Holly In Pediatric Perinatal Epidemiology, 2002) One major study conducted by Effird in the Journal of Neuro-Oncology in 2005 also found that there is no statistically significant relationship between semi-permanent or temporary and permanent dyes for hair used during pregnancy and brain tumors in children with the exception of three times the incidence of brain tumors among Israeli children who use semi-permanent hair dyes.
Do different hair dyes pose different risk levels?
Temporary dyes (includes semi-permanent) seem to have higher toxic than permanent dyes during pregnancy. Studies on the scalp penetration with semi-permanent dyes as compared with permanent dyes on both monkeys and humans revealed they penetrated scalp more deeply than permanent dyes from both species. In contrast to permanent dyes which contain oxidizing agents, which allow the dye to bind irreversibly on the shaft of hair, which means it reduce skin absorption semi permanent dyes get their coloration through the use of solvents (alcohols and ethylene glycol ethers) that penetrate more effectively into the scalp than permanent dyes. Furthermore, more skin contact is found with semi-permanent colors since they are applied as foams rinses or surfactant solutions that facilitate absorption from the scalp. Semi-permanent hair coloring products contain the nitro derivatives of phenylenediamines, or aminophenols and azo dyes, and aminoanthraquinone dyes as well as N-nitroso compounds that have been found to be neurocarcinogens of the transplacental region in rodents.
Additionally, semi-permanent dyes are more likely to be applied by the individual herself, while permanent dyes are most likely to be applied by hairdressers. Self-application is more contact with the skin surfaces, like hands as opposed to if an external person applied the application.
Smokers were also discovered to be more toxic than non-smokers who use dyes. The increased exposure to nitrosamines as well as other carcinogens found in cigarettes as well as carcinogens in hair dyes.
Are hairdressers at risk?
The job of a hairdresser could come with some risks which could cause cancer. (International Agency of Research on Cancer-IARC-1993) Certain skin diseases such as occupational asthma and contact dermatitis are serious health risks for hairdressers. Some studies have not confirmed higher risk of reproductive problems for hairdressers, like infertility and abnormalities in the reproductive system, congenital malformations as well as childhood cancers and the development of disorders in offspring. (Kersemaekers, 1995)