Brunettes finally a new shampoo just for you! Redken have added to their colour extend series with a new blue shampoo that gradually prolongs the beauty of your hair colour. Redken Colour Extend Brownlights Shampoo is available at Acresfield Hair Studio. It uses cool pigments to help put a stop to unwanted orange and brassy tones. Use daily for soft hair with rebalanced and revitalised colour.