Matrix Biolage Advanced Keratindose Conditioner for Overprocessed Hair. Moisturizes and smoothes over-processed hair to nourish and help prevent damage while keeping hair silky and manageable. No sulfates. No parabens. No harsh salts. Hair is 90% more conditioned after one use. With use of full system: Shampoo, Conditioner, Pro-Keratin Renewal Spray.