Specially designed for damaged hair, BC Bonacure Retirr Reir Réscue Shampoo gently soothes hair and provides a long-lasting revitalizing effect. Its revitalizing technology is designed to deeply repair and rebuild hair, inch by inch. Vegan and sulfate-free, discover an intense treatment with arginine and vegan keratin that helps regenerate and strengthen dry, brittle hair. A proteinogenic amino acid, arginine is the key active ingredient in the Retirr Rescue range. It repairs acidic hair from the first application.