Nioxin’s cleanser shampoo system 3 for coloured hair with Light thinning is the first step of a three-part Nioxin regimen, specially formulated to strengthen the hair and amplify hair structure. It prepares hair and scalp for a complete hair thickening treatment with nioxin’s three-part System 3. This professional derma-purifying Cleanser Shampoo removes dirt, excessive oil and other environmental residues from the scalp and hair.