An analysis of 23 popular hair color products sold in the United States found that all of them contained at least one carcinogenic chemical. The tests were conducted on 21 boxed dyes and two temporary ...

There’s nothing pretty about this. A watchdog group tested more than 20 top-selling at-home hair dyes and found toxic chemicals across the board — including a substance classified as a probable human ...

Consumer Reports conducted its first-ever tests of hair dye for contamination—we tested them for looks in 2020—and found contaminants in all of them. They pose risks for skin irritation, and studies ...

Current estimates suggest that 50-80% of women and 10% of men 40 years of age and over in the United States and Europe use permanent hair dye products. The aromatic amine p-phenylenediamine (PPD) is ...