Celebrate your strength with the scientifically proven routine to repair damaged hair, reduce breakage and split ends, and make hair visibly stronger. Our most powerful at-home bond-building treatments + the bestselling nourishing and hydrating shampoo and conditioner to maintain your healthiest hair. Kit includes: Full Size Nº.0 Intensive Bond Building Treatment (5.24 fl. oz. / 155 mL) Full Size Nº.3 Hair Perfector™ (3.3 fl. oz. / 100 m) Travel Size Nº.4 Bond Maintenance® Shampoo (3.3 fl. oz. / 100 mL) Travel Size Nº.5 Bond Maintenance Conditioner (3.3 fl. oz. / 100 mL)