In a 2019 study involving more than 46,000 women, Dr. White and her colleagues found that those who used permanent hair dye frequently (every five to eight weeks) had a 9 percent higher risk of ...

THE BOYZ’s New also had a cool, fresh take on split-dyed hair with his blue and blonde look from the group’s 2020 comeback “The Stealer.” His dye job was all on the top layer of hair, with ...