TONI&GUY Blue is the innovative solution for naturally brown hair and brunette hair with bleach and salon highlights. In the colour wheel purple sits opposite to yellow, and blue opposite red. This is why the blue pigments will neutralise red and orange tones in brunette hair. Massage onto wet hair from root to tip. Leave this shampoo in your hair for 1-2 minutes and rinse thoroughly. Follow with TONI&GUY Blue Conditioner and Blue Toning Mask for an amazing Brunette Colour.