Kérastase Chronologiste Sérum Nuit Jeunesse Age-correcting treatment for hair weakened by the effects of time 90 ml

Youthful Night Serum from Kérastase is an age-correcting night treatment, infused with Pro-Xylane™ and Ochrophyta algae, designed to correct the visible signs of hair aging overnight.

Formulated to address dryness, dullness, frizz, and loss of volume and thickness, this leave-in serum provides intensive overnight care. Just one application is all it takes to deliver powerful active ingredients deep into the hair shaft.

Enriched with Pro-Xylane™, a green chemistry molecule renowned for its exceptional anti-aging properties, and Ochrophyte Algae, the world’s fastest-growing algae, a bio-sourced treasure from the deep sea that harnesses the ocean’s regenerative power.

Its transformative "quick-break" texture instantly blends into the hair, leaving a flawless finish and enveloping the hair in its signature fragrance Chronologist, which transforms the act of skincare into a luxurious ritual.

Apply to dry or towel-dried hair before bedtime. Rub a small amount between your hands, then distribute evenly along the lengths and ends. No need to rinse.

Wake up to thicker, healthier, and softer hair.

BENEFITS FROM THE VERY FIRST NIGHT
5.7% increase in fiber diameter**
-66% frizz*
+32% shine*
Hair 92% stronger*
77% of women who tried it say their hair feels revitalized**
*Instrumental test after one use of the Youthful Night Serum
**Consumer test conducted on 90 women after a single use of the Chronologiste routine: bath + mask + youth-boosting night serum

FOR WHAT HAIR TYPE?
For hair weakened by the effects of time: dryness, dullness, loss of volume and thickness, and frizz.

HAIR HEALTH

Since 1900, life expectancy has doubled. Today’s women are not the women of yesterday: they are liberated, bold, and committed to the pursuit of a better life. For these women, confidence is essential, and their hair plays a key role in expressing their individuality and sense of youth. Yet, just like the skin, hair too undergoes the aging process.

After decades of in-depth scientific research, L’Oréal has succeeded in unraveling the complex science of hair aging. KÉRASTASE has identified five key signs of aging hair: dryness, dullness, frizz, and a loss of volume and density.

To visibly reduce these signs, KÉRASTASE presents Chronologist : an expert routine that directly applies the latest advancements in skincare science to hair care. This transformative approach delivers immediate results, revealing visibly thicker, smoother, and healthier hair after just one night.

Benefits:
Reverse 5 signs of aging in just one night.*
Wake up to thicker, healthier, softer hair.

Its transformative "quick-break" texture melts instantly into the hair, leaving a flawless finish and enveloping the hair in Chronologiste's signature fragrance, which transforms the styling routine into a luxurious ritual.

Infused with our Longevity Caviar: a combination of Pro-Xylane™, a green chemistry molecule renowned for its exceptional anti-aging properties, and Ochrophyte Algae, the world’s fastest-growing algae, a bio-sourced treasure from the deep sea that harnesses the ocean’s regenerative power.

*Instrumental test conducted after applying the serum to hair weakened by the effects of time: dryness, dullness, lack of volume and thickness, and prone to frizz.

Results:
BENEFITS OF THE YOUTH NIGHT SERUM FROM THE VERY FIRST NIGHT
5.7% increase in fiber diameter**
-66% frizz*
+32% shine*
Hair 92% stronger*
77% of women who tried it say their hair feels revitalized**
*Instrumental test after one use of the Youthful Night Serum
**Consumer test conducted on 90 women after a single use of the Chronologiste routine: bath + mask + youth-boosting night serum