Question: what is the best purple shampoo to use?
Answer: Philip Kingsley Pure Blonde Booster Shampoo. ...  Kérastase Blond Absolu Bain Ultra Violet Shampoo. ...  Redken Color Extend Blondage Shampoo. ...  L'Oréal Professionnel Blondifier Gloss Shampoo. ...  TIGI Bed Head Dumb Blonde Violet Toning Shampoo. ...  BLEACH LONDON Silver Shampoo.