Kérastase Résistance Extentioniste Length Strengthening Shampoo 250mlKrastase Bain Extentioniste is a fortifying shampoo designed for those seeking healthy, long hair. This formula rebuilds and strengthens hair fibres, making hair shiny, smooth, and resilient. It reduces breakage and revitalises each strand, helping to repair damage and support healthy lengths. Protects hair from external aggressors while stimulating the scalp, ensuring your hair grows stronger and longer. Enjoy soft and firm hair with every wash.