Hi @Lola123 depending on what colour your hair is, if it has like an ashy or cool tone to it, it is recommended to use a purple shampoo, but if its a warm or golden tone you should use a sulphate free shampoo atleast to protect your hair and stop it from stripping the colour xoxo
@Lola123 using a non sulphate shampoo will extend the life of the colour. I use John Frieda and Charles Worthington for my hair. I recently bought Maui from Boots as it was on offer but it causing hair loss in the shower. I have emailed the manufacturer and they have asked me to call them. So avoid that one.