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 ...

Benefit from the strengthening goodness of Olaplex while protecting your hair colour tone with this Olaplex No 4 update. Enriched with purple toner pigments, it promises to leave blondes three ...

A purple shampoo ... you'll totally transform your hair. Here's how... Why do I need a blonde shampoo? Before you left the hairdressers, they will have applied a toner. These determine the ...