Continuous exposure to daily environmental and mechanical aggressions leads to a progressive ageing of the hair fiber, consequently contributing to an overall aged appearance. Given that hair, akin to skin, serves as a prominent visual indicator of age, its compromised condition can significantly impact an individual's self-perception and confidence.

To address these concerns, Kérastase has identified 5 signs of hair ageing - frizz, dullness, lack of thickness, lack of volume and developed a targeted regimen, including an innovative night serum, designed to visibly improve these signs.

What is the recommended frequency of use?
Apply every 3 days on towel-dried scalp for 1 month.

Do I need to rinse it out?
No. It’s a leave-in formula that works overnight to regenerate the scalp.

Is it safe for sensitive scalps?

Yes. The formula is gentle and suitable for mature, sensitive scalps.

Is the packaging recyclable?
Yes. The bottle and dropper are recyclable and developed under Kérastase’s eco-design commitments.

Should I apply it before or after the Overnight Serum?
Apply Longevity Potion on the scalp first, then follow with the Overnight Youth Serum on hair lengths and ends for a complete nighttime transformation.

CHRONOLOGISTE LONGEVITY POTION 30ML CHRONOLOGISTE LONGEVITY POTION 30ML