Its Active Principle Penetrates The Cortex, Fills The Damaged Parts And Favors The Perfect Cohesion Of The Internal Structure, Repairing The Most Profound Damages.This leave-in treatment from Alfaparf creates a flexible lattice which seals and repairs dry, split ends, whilst nourishing your hair and replenishing it with moisture. Your locks will be left looking stronger, healthier, and less prone to unsightly split ends.