Woman Using Permanent Hair Dye (image) NIH/National Institute of Environmental Health Sciences Share Print E-Mail Caption The study found that women who use permanent hair dye and chemical hair straighteners have a higher risk of developing breast cancer than women who don't use these products. Credit NIEHS Usage Restrictions For use with media coverage of this press release only. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.