Purple shampoo eliminates yellow tones in blonde hair by using violet pigments to neutralize brassiness. Blue shampoo is ...

Is purple a real color? Scientists think everything we've ever believed about the color purple may not be true due to the ...

Physicists and vision scientists are lining up behind a provocative claim: the rich color we call purple is not a property of light at all, but a story the brain tells itself. Light in the real world ...