Red is the rarest hair color, but to understand why that’s the case, you need a basic grasp of the science. There’s a lot ...

Millie Bobby Brown is ditching the dark side. The Stranger Things star has gone blonde and it’s very Britney Spears-coded.

From cherry cola to bronde, colourists Tracey Cunningham, Cass Kaeding, and Sierra and Kener break down the hair colours ...