The Kérastase Resistance Maque Extentioniste Hair Mask is designed to strengthen hair so you can let it grow beautifully and long. It gives deep nourishment to the hair and protects the health of the hair, allowing your hair to grow long in a healthy way. This protection and the added creatine make the hair stronger and more resistant to breakage. This makes it easier for you to get healthy long hair that already has a healthier look. Highly efficient, targeted maximum care: like the Resistance Masque Extensioniste hair mask. The nourishing mask acts deeply by supplying the hair fiber with valuable nutrients and thus repairing the hair strand by strand - until it has regained its healthy, vital condition. A positive side effect: the mask smells wonderfully subtle. Shiny finish and maximum care: thanks to innovative active ingredients.