Keratin is a fibrous protein and a major component of the hair. It’s depleted when hair is damaged, and keratin loss makes hair extra vulnerable. This shampoo is infused with keratin and provitamin B5, that nourish, moisturize and add shine and to the hair. The unique Quat Complex strengthens strands and protects them against breakage. This shampoo is perfect for those with damaged tresses or normal to dry hair. After diligent use, your hair is left silky smooth, stronger, healthier and easier to manage.