Kérastase Chroma Absolu Hair Oil-In-Serum is a luxurious treatment designed specifically for colour-treated hair. This lightweight serum combines nourishing oils with advanced colour-protection technology to preserve your hair's vibrancy and shine. With 93% colour preservation, this formula helps maintain your colour investment while delivering deep hydration and smoothness. The oil-in-serum texture absorbs quickly without weighing hair down, leaving strands soft, silky, and luminous. Perfect for daily use, this 75ml bottle provides concentrated care that protects against fading and environmental damage. Ideal for anyone looking to extend the life of their colour treatment while enjoying salon-quality results at home.