Redken extreme length shampoo and conditioner duo set 1 liter each product description helps achieve up to 6 inches of growth in one year length fortifying complex contains biotin a vitamin known for its ability to promote healthy hair growth strengthens hair from root to tip reducing breakage by 81% shampoo: formulated with 1% length care complex to strengthen damaged hair gently cleanses helps promote strong hair conditioner: formulated with 4% length care complex helps strengthen fragile strands and ends for longer hair provides nourishment and conditioning products listed 1 bottle redken extreme length shampoo 1l 1 bottle redken extreme length conditioner 1l Sku: gnex86 Brand: Redken Size: []