This Biolage Bond Therapy Shampoo is specifically formulated to address the needs of extremely damaged hair. It works to repair and strengthen hair structure at a molecular level, leading to visibly healthier and more resilient strands. Use this professional-grade shampoo as the first step in your bond-repairing routine to gently cleanse while initiating deep restoration. It is ideal for hair compromised by chemical treatments, heat styling, or environmental stressors.