Sebastian Professional Penetraitt Treatment Masque is a deep conditioning treatment for your stressed, dull and chemically damaged hair. Its active rescue system penetrates the hair, repairing and reconstructing its natural health for super-strong, silky soft style. Sebastian Professional Penetraitt Repair Masque is essential care for your damaged hair, to strengthen any look, any time while removing and guarding it from stress caused from past chemical treatments and heat damage. Sebastian comes to your hair s rescue with this colour safe and deep conditioning, fortifying and strengthening masque.