I tried the L'Oreal EverPure Purple Shampoo for blonde hair
Amazon.com : L'Oreal Paris EverPure Blonde Sulfate Free Shampoo for Color-Treated Hair, Neutralizes Brass + Balances, For Blonde Hair, 8.5 Fl Oz (Packaging May Vary) : Beauty & Personal Care
EverPure Blonde Sulfate Free Shampoo for Blonde Hair - L'Oréal Paris