This Nioxin Deep Cleansing Shampoo is specifically designed for untreated hair that is showing visible signs of thinning. It works to remove pore-clogging sebum, fatty acids, and environmental residues from the scalp and hair, providing an optimal foundation for fuller-looking hair. Formulated with the Scalp Suitability System 2 ingredients, including Biotin, Caffeine, and Niacinamide, this shampoo helps to cleanse thoroughly while commencing the process of hair thickening and revitalisation. Use as the first step in the three-part Nioxin System 2 treatment to refresh the scalp and prepare hair for subsequent conditioning and treatment steps.