The Kérastase Chroma Absolu Anti-Frizz Thermic Leave-In Serum (150ml) is a luxurious, lightweight moisturising formula expertly crafted for colour-treated hair, delivering intense hydration while forming a powerful shield against UV-induced damage, humidity, heat styling, and oxidative stress. Enriched with potent antioxidant actives, this leave-in serum works to preserve vibrant hair colour, reduce porosity, and leave strands 96% more moisturised, instantly softer, and visibly smoother with long-lasting frizz control and protection against environmental moisture. Simply apply to damp or dry hair without rinsing for a salon-quality finish that keeps colour radiant and hair beautifully manageable every day.