The Kérastase Chronologiste Overnight Youth Hair Serum targets the primary signs of aging across both the scalp and hair fiber. Capitalizing on the body’s natural nocturnal repair cycle, it delivers intense moisture and vital nutrients deep into hair strands, counteracting dryness, brittleness, and loss of volume or lustre.
At the core of its high-performance formula is Hyaluronic Acid, which intensely hydrates and plumps the hair structure to lock in essential moisture. It is combined with Abyssine, a powerful regenerating molecule that strengthens and resiliently smooths the hair fiber, and Vitamin E, which provides antioxidant defense against daily environmental stressors. Together, these active ingredients smooth damaged hair cuticles, tame frizz, and shield hair from damaging friction against pillowcases throughout the night.
Infused with the signature Chronologiste fine fragrance featuring delicate notes of tea rose, light woods, and musk, the serum offers an indulgent sensory experience. To use, work one to two pumps into damp or dry hair and scalp before bed, distributing evenly through the lengths and ends. Leave it in overnight without rinsing to wake up to noticeably smoother, radiant, and youthfully restored hair by morning.





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