The Kérastase Resistance, Strengthening & Smoothing Mask is designed for long hair, with a sophisticated formula containing creatine R and amino acid to provide enhanced strength, manageability, and smoothness. This intensive mask, enriched with silicone, hyaluronic acid, and vitamins, instantly improves the appearance of weakened locks, leaving them soft, radiant, and protected against future damage. Its concentrated and nourishing properties penetrate deep into the hair shaft, providing a luxurious and long-lasting result. Ideal for styling or additional smoothing, this mask is a must-have for women with longer hair who want to enhance their beauty and vitality.