Redken extreme duo 2 products replenish dry damaged hair with this duo of hair saviours while enjoying an envy inducing saving on this twosome of extreme products redken extreme duo will strengthen repair and protect your damaged tresses and make stressed out hair shine with health thanks to the use of redkens 3d repair complex technology this pack contains the following products redken extreme shampoo 300ml gently cleanse and repair your excessively dry brittle and damaged hai