Provide hair with extreme strength and fortification with the Redken Extreme Duo. Designed specifically for damaged and brittle hair, this shampoo and conditioner work together to strengthen hair against breakage, damage and split ends. Formulated with a variety of proteins known for encouraging healthy hair, these products treat the hair at the very core to strengthen and improve quality. Studies found that continued use of this shampoo and conditioner reduced hair breakage by up to 75%. This set includes the Redken Extreme Shampoo 300ml: Cleanse and nourish the hair whilst providing strengthening and fortifying benefits with this protective shampoo. Formulated with a unique RCT protein complex that includes three hair-loving proteins, this shampoo treats strands of hair at the tip, core and root. Ideal for hair damaged by bleach, heat styling and colour, this shampoo encourages a healthier and shinier appearance in hair. Apply a small amount to wet hair and thoroughly massage into the roots before rinsing. Redken Extreme Conditioner 250ml: This best-selling Redken product treats hair at the core to produce shinier, softer and more supple locks. Use on wet shampooed hair, smoothing from mid-lengths to the ends to detangle and moisturise before rinsing. Leave the conditioner in the hair for 5 minutes for a deeper treatment.