Kérastase – Chronologiste – Overnight Youth Serum is a luxurious night treatment specially developed to intensely restore visibly aging hair. This serum is enriched with Pro‑Xylane™ and Ochrophyta algae, providing deep nourishment and strengthening throughout the night. It helps improve signs of hair aging such as dryness, dullness, frizz, lack of volume and reduced thickness.Thanks to Pro‑Xylane™, an anti‑aging molecule, and Ochrophyta algae, the hair is intensely repaired and appears visibly fuller. The lightweight, fast‑absorbing texture melts instantly into the lengths, leaving the hair soft, smooth and refined. The signature Chronologiste fragrance delivers a luxurious care experience.

  • Specially developed to restore visibly aging hair
  • Enriched with Pro‑Xylane™ and Ochrophyta algae for deep nourishment and strengthening
  • Helps improve dryness, dullness, frizz and lack of volume
  • Luxurious experience thanks to the signature Chronologiste fragrance