"In a new study, hairdressers who often used light colored hair dyes or hair-waving products on clients had more potentially cancer-causing compounds in their blood than hairdressers who used the chemicals less frequently.

The study included hairdressers as well as women who used hair dyes on themselves and some who had never used them at all, and none of the women had actually been diagnosed with cancer.

The World Health Organization considers hairdressing work probably carcinogenic, since hairdressers tend to be at higher risk for bladder cancer. The new results could help narrow down specifically where the cancer-causing agents are coming from."

Kathryn Doyle reports for Reuters June 10, 2014. [2]