- Professional-strengthening shampoo, designed for colored, damaged hair showing signs of advanced weakening - Enriched with biotin, niacinamide, and caffeine—ingredients that nourish the root, stimulate follicles, and reinforce the hair fiber - Gently cleanses the scalp, removing excess sebum and environmental residues that can clog follicles - Provides deep hydration, helping to increase hair density, thickness, and volume - Reduces breakage and improves hair resistance from root to tip - Ideal for daily hair care routines, especially for colored, dry, or damaged hair - Easy application: distribute over wet hair, gently massage, and rinse thoroughly - Recommended as the first step in the Nioxin System 4 for optimal results