Overnight Youth Serum by Kérastase is a night treatment infused with Pro-Xylane™ and Ochrophyta Algae, designed to reverse the visible signs of ageing during nighttime.
Targeting dryness, dullness, frizz, lack of volume and thickness, this leave-in serum delivers intensive overnight care. Just one pump to deliver powerful actives deep into the hair.
Powered by Pro-Xylane™, a molecule known for its anti-ageing action, and Ochrophyta Algae, the fastest growing algae in the world, a bio-sourced deep sea treasure that captures the regenerative power of the ocean.
Its transformative quick-break texture melds instantly into the hair's lengths, leaving a flawless finish and enveloping hair with the signature Chronologiste fragrance that turns routine care into a luxurious ritual.