Tag: color

Chemists shine a new light on safer pigments, by accident

Chemists shine a new light on safer pigments, by accident

A new non-toxic blue pigment in two centuries has just been discovered. Now the team of chemists set out to find a safer red pigment.

To Dye or Not To Dye

To Dye or Not To Dye

Dyeing hair is a common, but not recent, beauty practice. Hair dyeing (coloring) has been around for thousands of years, using plant-based dyes such as indigo and turmeric before synthetic dyes were invented. I recently wondered “What kind of science goes into modern hair coloring? What is the…