Overnight Youth Serum

DETAILS An overnight serum that helps replenish hydration while supporting softer, smoother, and more manageable hair by morning. Designed for both hair and scalp, the lightweight formula absorbs easily overnight without weighing hair down. Wake up to hair that feels refreshed, hydrated, and easier to style. BENEFITS OVERNIGHT HYDRATION — Helps replenish moisture while you sleep. SOFTER HAIR FEEL — Leaves hair smoother and more supple by morning. IMPROVED MANAGEABILITY — Helps reduce dryness and improve daily styling ease. LIGHTWEIGHT CARE — Absorbs easily without leaving residue or heaviness. REFRESHED HAIR & SCALP — Supports a comfortable scalp feel and healthier-looking hair. HOW TO USE Apply before bedtime to dry or towel-dried hair. Distribute through lengths and apply to the scalp as desired. Leave in overnight without rinsing. Style as usual the following morning. PAIR WITH For complete overnight renewal and daily protection: Kérastase Chronologiste Bain Régénérant for gentle cleansing that refreshes the hair and scalp while maintaining softness and shine. Kérastase Chronologiste Masque Intense Régénérant for concentrated care that helps nourish and revitalize from root to ends. Kérastase Chronologiste Thermique Régénérant for heat protection and smoothing support during blow-drying and styling. Maintains hydration, softness, and healthy-looking shine while supporting a complete renewal routine from cleansing through styling.