Champú limpiador System 4 de Nioxin, champú de 10,1 ozNioxins cleanser shampoo system 4 for colored hair with progressed 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 Nioxins three part System 3. This professional derma purifying Cleanser Shampoo removes dirt, excessive oil and other environmental residues from the scalp and hair. System 4 Cleanser