Is Coloring Hair Safe? Dye, Straighteners May Increase Breast Cancer Risk, Study Finds

Questions about whether chemicals used to color or straighten hair can cause cancer have swirled for years, according to Today.com. The answers have been inconsistent and inconclusive, but a large new study released on Tuesday had some sobering findings: Women who used permanent hair dye or straighteners, or applied straighteners to others, had a higher risk of developing breast cancer than women who didn’t use those products.