BLONDIFIER COOL neutralising shampoo 300 ml BLONDIFIER COOL neutralising shampoo 300 ml is a shampoo designed to neutralise yellow tones in blonde hair. It is formulated with purple pigments that help to neutralise the yellow tones and enhance the cool tones of the hair. It also contains Panthenol and Vitamin B5 to nourish and hydrate the hair. It is suitable for all blonde hair types and can be used on both natural and colour-treated hair.