For very damaged, over styled and chemically treated hair. The active rescue system penetrates the hair, repairing and reconstructing its natural health for super strong, silky soft style. Sebastian professional penetraitt shampoo 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 shampoo. To use massage into wet hair to form a lather. Rinse thoroughly and repeat if necessary.