Purple shampoo for all shades of color-treated blonde, highlighted and lightened hair created with violet toning properties for your strongest and brightest blonde hair yet. Bring out your best blonde with the Strength Cure Best Blonde Shampoo for all shades of color-treated blonde, highlighted and lightened hair. Created with violet toning properties, this sulfate-free purple shampoo helps tone blonde hair and neutralizes and brightens ashy, brassy tones. Formulated with the Strength Cure...