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 ...

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 ...

That’s where color-depositing shampoo (think purple shampoo) comes into the picture. Believe it or not, color theory is a big ...

So for blondes, I’ve found shampoos with purple-depositing formulas to fight brassiness. As the sun can fade color, I’ve also looked for ingredients that provide UV protection (like vitamin C ...