Sérum Filler Réparateur by Kérastase is a leave-in repairing anti-breakage filler hair serum. This anti-frizz serum works to seal and fill hair strands, and protect them from the heat of styling tools, leaving hair shiny and strong. Kérastase Première Sérum Filler Fondamental is a lightweight leave-in treatment for the inner repair of all types of damaged hair, leaving it glossy and supple: - Repels humidity, deeply nourishes and locks out frizz; - Fills fiber surface with matter to recreate softer and smoother hair; - 55% softer hair* - 3x more moisturized hair* - Protects from heat, up to 230°C* - 99% stronger hair* - 72H anti-frizz* *Instrumental test after 1 application of the serum
