Kerastase Nutritive Masquintense Riche Hair Mask is an ultra-concentrated, deeply nourishing treatment designed to deliver intense hydration and long-lasting nutrition. This rich, creamy formula is specifically developed for hair lacking essential nutrients, helping to restore softness, manageability, and shine from the inside out. At the core of the formula are plant-based proteins, derived from sources such as wheat, corn, and soy, which act as essential nutrients to strengthen and reinforce the hair fiber. These proteins help rebuild the hair structure, improving resilience and reducing breakage. The inclusion of niacinamide (Vitamin B3) supports the hair barrier by locking in moisture and protecting against dryness, ensuring long-lasting hydration and improved hair health. Additionally, anti-dryness polymers work to maintain softness and smoothness while preserving the hair’s natural movement without weighing it down. This ultra-rich mask penetrates deeply into the hair fiber, delivering up to 72 hours of nutrition and significantly improved hydration, leaving hair visibly softer, shinier, and easier to manage after each use. Its thick, indulgent texture makes it ideal for treating severely dry or damaged hair, providing a salon-like repair experience at home.