In the realm of hair care, purple shampoo has earned its spot as ... It stands as a testament to how a little color theory can go a long way in perfecting our beauty routines.

Color-depositing shampoos add specific pigments (either purple, blue or green) onto the hair shaft to maintain your desired color. Based on color theory, blondes should use purple shampoos ...

Purple pigments keep gray hair bright, while silk proteins strengthen ... This triple-action shampoo pushes color pigment deep into strands for a long-lasting hue, balances dry hair and reduces ...