This luxurious hair mask by Kérastase deeply hydrates and strengthens the hair fiber to protect and prevent color fading. Ideal for medium to thick hair, it leaves hair softer, smoother, and with a high shine finish. With 92% stronger strands and 93% smoother hair, its award-winning formula also improves color brilliance. Key ingredients like amino acids and Centella Asiatica rebuild the fiber from the inside out for stronger, shinier, and more vibrant hair.