The best purple shampoos, according to our testers, include Amika, Kristen Ess, and IGK, and Nexxus. Our picks range in price ...

“The Biolage Color Lasting Purple Shampoo uses an external Violet ... toning product recommended for those with blonde and gray hair or highlights. More closely, purple shampoos contain purple ...

Infused with ultra-violet pigments and suitable for all ... it’s a great choice for both natural and color-treated gray hair. “I love this one because it’s sulfate-free and packed with ...