Overnight Youth Serum by Kérastase is an age-corrective night treatment infused with Pro-Xylane™ and Ochrophyta Algae, designed to reverse the visible signs of aging 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.
✔ 66% less frizz*
✔ 32% more shine*
✔ 92% more strength *
✔ 77% say their hair feels revitalized**
*Instrumental test after 1 use of Overnight Youth Serum **Consumer test after one application of full Chronologiste routine, bain+masque+Overnight serum