Nioxin Scalp + Hair Thickening System 3 Shampoo + Conditioner 1L DuoNioxin System 3 Cleanser Shampoo and Scalp Therapy Revitalising Conditioner 1000ml Bundle is a complete professional thickening treatment for coloured hair with light thinning that removes follicle clogging sebum, fatty acids and environmental residues while amplifying hair texture, providing moisture balance and colour protection. System 3 is formulated to leave hair thicker, denser looking and with a vibrant colour. It helps remove follicle clogging