Chronologiste Overnight Youth Serum - For Hair Weakened by Signs of Aging

Chronologiste Overnight Youth Serum

Kérastase Chronologiste Overnight Youth Serum marks the ultimate ritual for nocturnal regeneration. This exceptional age-correcting treatment leverages your sleep to infuse the hair with its most precious active ingredients. Targeting dryness, dullness, frizz, and loss of volume or thickness, this leave-in serum reverses the signs of aging from the very first night. A single gesture is all it takes to diffuse powerful actives deep into the fiber.

This formula marries Pro-Xylane, an iconic anti-aging active from green chemistry. with the organic power of Ochrophyte algae. This bio-sourced component, renowned for its unique growth speed, holds the full regenerating potential of the ocean. This efficacy translates into a melting texture that instantly fuses with the lengths for a sublime finish. Enveloped in the collection’s signature fragrance, every application becomes a moment of absolute prestige.

Hair types

For hair weakened by the effects of time

Advantages

• Reveals visibly younger, healthier, and softer hair
• +5.7% increase in fiber diameter
• -66% frizz and +32% shine
• 92% more strength through deep revitalization
• Zero residue on the pillow or the hair surface

Fragrance

Chronologiste stands out with its luxurious couture fragrance, a floral and sensual scent of exceptional richness.

Top Notes: Bergamot, iris, and green notes
Heart Notes: Freesia, rose, and marine notes
Base Notes: Musk accord, white flowers, and Indonesian Patchouli Orpur

How to use it

Apply to dry or damp hair as the final step of your evening routine.

Distribute one pump into your hands, then apply evenly through the lengths and ends.

Do not rinse. The serum absorbs completely overnight without leaving any residue.

Ingredients and their benefits

• Hyaluronic Acid: A supreme source of hydration, this molecule drenches the fiber with vital moisture to plump the hair from the root. By restoring the scalp's precious balance, it provides the hair with remarkable density.
• Abyssine: This powerful organic active repairs micro-damaged areas to restore the resilience of the hair shaft. It reveals a renewed vigor and a shine of absolute purity.
• Proxylane: A true molecular mastermind, it infuses the deeper layers with essential nutrients to redensify the hair from within. The hair gains visible body and regains a luxurious, supple touch.
• Ochrophyta Algae: Renowned for its soothing properties, this rare algae strengthens the scalp and protects the fiber from external aggressors, thereby preserving the hair’s youthful vitality.

Did you know it?

Since 1900, life expectancy has doubled, giving rise to a generation of bold women whose radiance now transcends age. For the modern woman, the vitality of her hair reflects her very identity. Yet, the science is clear: time does not only mark the features of the face. Hair also undergoes structural changes that demand an anti-aging approach as rigorous and advanced as high-end skincare.

Building on decades of scientific expertise, L’Oréal Research has decoded the complex mechanisms of hair aging. From these breakthroughs, Kérastase has identified the five primary signs of aging hair: dryness, dullness, and frizz, along with a loss of volume and density.

To visibly correct these marks of time, Kérastase unveils Chronologiste. More than just a collection, this expert routine draws its power from the latest innovations in dermatological science. This exceptional ritual offers a true metamorphosis: from the very first application, hair is revealed to be denser, smoother, and visibly healthier.