Bioderma Nod? K Keratoreducing Shampoo 150ml is a capillary care intended for the severe and chronic squamous states appearing by thickened dry patches often associated to itchings and irritations. Its original formula activates the elimination of dry patches at the level of the scalp and prevents their reappearance. It calms itchings thanks to the action of Zanthal?ne. In addition to limiting rednesses, it brings brightness, flexibility and volume to hair. Its very mild, fragrance-free washing base ensures a careful washing.