Experts sound off.

Azo dyes, defined by their characteristic azo group (–N=N–), represent one of the most important classes of synthetic dyes in modern textile chemistry. Their extensive π-conjugation systems render ...

Add Yahoo as a preferred source to see more of our stories on Google. Dyeing your brunette strands blond at home may seem like a daunting task at first, but familiarizing yourself with the proper ...

It’s an issue that has plagued the beauty industry for more than a century: Dying hair too often can irreparably damage your silky strands. Now a Northwestern University team has used materials ...

Sometimes you just feel moved to make a colorful change to your hair. Luckily, you don’t have to expose your locks to potent damaging dye elixirs to try out something fun and vibrant. From ...

The possibilities are endless in the world of at-home hair coloring. If you’re looking to upgrade your tresses with a fiery new hue, opting for one of the best red hair dyes will help you achieve bold ...

Texas Bomanite tackled the challenges of a four-dye application with decorative saw cuts and a one-color-at-at-time application approach. Staining or dyeing polished concrete floors is certainly not a ...

Permanent hair dyes are a popular choice for achieving bright, long-lasting hair colour. Many of these products contain a chemical called p-phenylenediamine, commonly known as PPD. This ingredient is ...