That's where purple shampoo, which is kind of a "toner ... Enhancer Toning Shampoo No.4P Blonde Enhancer Toning Shampoo Olaplex's No. 4 Blonde Enhancer Toning Shampoo boasts a highly concentrated ...

Try using your shampoo as a more intense treatment ... while protecting your hair colour tone with this Olaplex No 4 update. Enriched with purple toner pigments, it promises to leave blondes ...

Based on color theory, blondes should use purple shampoos, which is one type of color-depositing shampoo. As the name ... smells great post-shower. It has a 4.6-star average rating from over ...