Revitalize your hair care routine with the Nioxin System 4 Shampoo and Conditioner, specifically formulated for coloured hair experiencing thinning. Treat your locks to the TLC that they've been craving - this supersize duo will last you a lifetime... Both the Nioxin System 4 300ml Shampoo and 300ml Conditioner nourish and strengthen while promoting a healthy scalp environment. Its lightweight, hydrating formula provides essential moisture, improving the overall texture and manageability of your hair without adding heaviness.