by Patty Donovan
(Health Secrets) Consumers in the U.K. have been advised to stop using hair dyes after a European Commission watchdog group failed to give its support for the products. Hair dyes have recently been linked to bladder cancer and rheumatoid arthritis, and the commission made its ruling based on lack of data substantiating their safety. Of particular concern to the watchdog group are the dark color permanent dyes used every four to six weeks.
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With aging populations, hair dye use has been substantial in the U.S. and Europe. It is estimated that more than one-third of women over age 18 and about 10 percent of men over age 40 use some type of hair dye.
Hair dyes are classified as permanent (or oxidative), semi-permanent, and temporary. Permanent hair dyes make up about 80 percent of currently marketed products and consist of colorless dye intermediates, (chemicals called aromatic amines) and dye couplers. In the presence of hydrogen peroxide, the intermediates and couplers react with each other to form pigment molecules. Darker colors are formed by using higher concentrations of intermediates. Semi-permanent and temporary hair dyes are not oxidative and include colored compounds that stain hair directly.
More than 5,000 different chemicals are used in hair dye products.
The watchdog group’s decision came after research indicated that monthly users more than double their risk of bladder cancer. These results led to the European Commission’s asking manufacturers for details of safety tests.
Dr. Ian White, chairman of the Scientific Committee on Cosmetic and Non-Food Products and consultant dermatologist at St Thomas’ Hospital in London said in an interview with the U.K.’s Daily Mail, “They have not provided ample information that the dye is safe. Isn’t it amazing that a product should have such side gaps in its toxicological requirements but be on sale.”
Scientists are especially worried about the long-term effects of para-Phenylenediamine (PPD), a compound used in dark color hair dyes. There are indications from experiments in rats that PPD may be carcinogenic upon long-term application with hydrogen peroxide.
(Health Secrets) Consumers in the U.K. have been advised to stop using hair dyes after a European Commission watchdog group failed to give its support for the products. Hair dyes have recently been linked to bladder cancer and rheumatoid arthritis, and the commission made its ruling based on lack of data substantiating their safety. Of particular concern to the watchdog group are the dark color permanent dyes used every four to six weeks.
With aging populations, hair dye use has been substantial in the U.S. and Europe. It is estimated that more than one-third of women over age 18 and about 10 percent of men over age 40 use some type of hair dye.
Hair dyes are classified as permanent (or oxidative), semi-permanent, and temporary. Permanent hair dyes make up about 80 percent of currently marketed products and consist of colorless dye intermediates, (chemicals called aromatic amines) and dye couplers. In the presence of hydrogen peroxide, the intermediates and couplers react with each other to form pigment molecules. Darker colors are formed by using higher concentrations of intermediates. Semi-permanent and temporary hair dyes are not oxidative and include colored compounds that stain hair directly.
More than 5,000 different chemicals are used in hair dye products.
The watchdog group’s decision came after research indicated that monthly users more than double their risk of bladder cancer. These results led to the European Commission’s asking manufacturers for details of safety tests.
Dr. Ian White, chairman of the Scientific Committee on Cosmetic and Non-Food Products and consultant dermatologist at St Thomas’ Hospital in London said in an interview with the U.K.’s Daily Mail, “They have not provided ample information that the dye is safe. Isn’t it amazing that a product should have such side gaps in its toxicological requirements but be on sale.”
Scientists are especially worried about the long-term effects of para-Phenylenediamine (PPD), a compound used in dark color hair dyes. There are indications from experiments in rats that PPD may be carcinogenic upon long-term application with hydrogen peroxide.
- See more at: http://alignlife.com/articles/toxicity/cancer-alert-for-women-using-hair-dye/#sthash.llmDfHig.dpuf
