This Sebastian Professional Penetraitt Shampoo is designed to soothe hair that's been damaged from heat styling, chemical treatments, & more. Formulated with an active rescue system, this shampoo helps enrich & repair the hair strand by str&, giving it back its health & shine. Sebastian Professional Penetraitt Shampoo is essential care for your damaged hair, to strengthen any look, any time while removing & guarding it from stress caused from past chemical treatments & heat damage. Sebastian comes to your hair's rescue with this colour safe & deep conditioning, fortifying & strengthening shampoo. Directions of use: Massage into wet hair to activate the rich lather. Rinse thoroughly. Repeat if necessary. Follow with Penetraitt Conditioner.