Blond Absolu Cicanuit Hair Serum by Kérastase is an overnight recovery hair serum that nourishes and strengthens dry blonde hair. Sleep your way to healthier blonde hair, with a lightweight serum that restores the hair fiber overnight. The white cream-in-gel is lightweight, but packed with Hyaluronic Acid and Edelweiss Flower extracts for sensitized hair recovery. While you sleep, this hair serum for blonde hair nourishes the fiber without weighing it down, as well as forms a protective veil on the most damaged part of the fiber surface. Wake up in the morning with your lightened hair recovered, stronger and healthier. Frizz is controlled, split ends are healed, and breakage is reduced, so your hair is soft and manageable. Hair is +95% stronger* and +74% more hydrated** *Instrumental test after application of 2% Pure Hyaluronic Acid Serum + Cicanuit **Instrumental test after application of Cicanuit