From the classic balayage to bolder shades like electric blue, there's a perfect option for every skin type. Dare to ...

The trick? Finding a hair dye that delivers rich, natural-looking coverage without leaving your strands dry, damaged, or one-dimensional. With so many formulas on the market—permanent, demi ...

Bergamy-Rosa recommends shades that are one to two levels lighter than your natural color to cover budding grays. “This can help blend grays more seamlessly and reduce the contrast between dyed hair ...

Eleven tested positive to PTDS; of these, several were also allergic to other substances in the hair dye series. There was only one patient who was allergic to ortho-nitro-PPD and not to PTDS.