Overnight nourishment: Works through the night to replenish essential nutrients and hydration lost during the day. Kerastase Improves smoothness & manageability: Helps seal cuticles, reduce frizz and detangle hair, making strands softer and easier to style by morning. Kerastase Lightweight, non‑greasy finish: Absorbs into the hair without weighing it down or leaving residue, suitable for all hair types, including fine or dry hair. Kerastase Protects against friction: Helps protect hair from pillow friction, which can cause frizz and breakage overnight. Kerastase Boosts shine & health: Regular use can lead to softer, shinier, and more resilient hair in the morning.