8H Magic Night Serum by Kérastase is a beauty sleep high nutrition serum for dry hair. This overnight hair treatment contains anti-dryness polymers for immediate care with a light and non-greasy finish. It also delivers a dose of essential nutrients that boost the formula’s ability to nourish and reinforce the hair.  Benefits: -Protects from pillow friction-Restores fiber hydration with deep 8-hour action-Restores radiant, youthful fiber by morning-Helps restore natural hydration level