The Keratin-based Concerto Shampoo is a true bath of energy and vitality for devitalized and weakened hair. The amino acids in keratin work on the surface, repairing and strengthening the hair fiber; in depth, closing the hair scales and giving the cuticle its solidity and smooth appearance. Additionally, the keratin-based Concerto shampoo gently cleanses the hair without depleting its hydrolipidic barrier. Brand: Concerto Effects: Energizing and Revitalizing Size: 1 l Hair Type: Damaged hair, Fragile hair