Nioxin System 4 hair and scalp treatment 100ml an advanced solution specifically formulated for thick, colored and thinning hair. This professional product acts in depth to strengthen the hair fiber, improve perceived density and reduce breakage. Thanks to its innovative formula, it gently cleanses the scalp, removing impurities and residues, while nourishing and hydrating, creating an ideal environment for the growth of strong, healthy hair. Suitable for daily use, Nioxin System 4 gives a natural volumizing effect, enhancing the structure and shine of the hair. Perfect for those who want a complete and professional treatment to maintain vital and regenerated hair.