Kerastase Chronologiste Serum Universel Hair Serum 40mlYouth revitalizing serum to provide intense hydration to scalp and hair. Scalp feels revitalized and comforted*. Hair has 81% more hydration, more shine and long lasting frizz control**. Each fiber is plumped for a thicker diameter**, giving a fuller effect. This powerful and serum also prevents pollution particle deposition, to protect scalp and fiber. Using biomimetic caviar encapsulation, the Srum Universel harnesses the power of hyaluronic acid,