Overnight beauty sleep nourishing serum Product Description 8H Magic Night Serum by Kérastase is a beauty sleep serum for dry hair, leaving hair feeling smooth for up to 8 hours overnight. This overnight hair treatment contains anti-dryness polymers for immediate care with a lightweight feeling texture. The nourishing overnight hair serum works for up to 8 hours to smooth and strengthen dry hair and help protect from pillow friction. Product Benefits ✔ Protects hair from frizz and extra volume caused by pillow friction ✔ Refreshes hairs shine, strength and softness Up to 84% instantly less frizz* Up to 48% softer hair** Up to 40% more shine***