L’Oréal Professionnel Serie Expert Blondifier, 750 ml, Hair Conditioners for Women, The L’Oréal Professionnel Serie Expert conditioner makes your hair easy to detangle and nourishes it, something all healthy, beautiful hair needs. Characteristics: neutralises yellow undertones in your hair makes hair colour last longer protects hair against damage makes untangling and styling easier for both natural and dyed hair How to use: Apply after first washing with shampoo. Leave to act for a while, then rinse thoroughly.