The Redken Extreme Shampoo Fortifier is specifically formulated for damaged hair, providing deep hair repair and nourishment. With a volume of 1000ml, this shampoo contains all natural ingredients to help restore and strengthen distressed hair. The product line, Redken Extreme, ensures high-quality results, making it suitable for those looking to revitalize and protect their hair from further damage. The shampoo fortifier is designed to be used within 12 months of opening to maintain its effectiveness.