With a triple action, Alterna Caviar Anti-Aging Restructuring Bond Repair 3-In-1 Sealing Serum is a hair serum that repairs, protects and seals the hair cuticle in one step. Formulated with pure and sustainably sourced Caviar Extract, this serum not only provides an intensively repairing action, but also protects against the factors responsible for hair aging. Ideal for all types of damaged hair.