One challenge is that we look at hair colour based on three dimensions — lightness, red‒green axis, and yellow‒blue axis — but we have not had a technique that quantifies what is happening ...

Because, despite it sounding like an old wives tale, swimming pools can wreak havoc on your hair colour – leaving it with a dull, green hue. The thing is, it’s not technically the chlorine ...

With Christmas over, San Antonio Spurs' Jeremy Sochan cut off his popular Grinch-inspired green hair color and shared a photo officially saying goodbye to it. "Christmas is over," he posted.