Nioxin System 2 Cleanser Shampoo 10.1 oz Hair Thickening Biotin for Natural Hair Cleanse and refresh thinning hair with Nioxin System 2 Cleanser Shampoo. Designed for natural, untreated hair with progressed thinning, this 10.1 fl oz shampoo removes excess oil, sebum, and environmental buildup while creating a healthier scalp environment. Formulated with niacinamide, biotin, and botanical extracts, it helps strengthen hair from the roots and leaves it looking fuller, thicker, and healthier. Ideal as Step 1 of the Nioxin System 2 hair thickening regimen. #Nioxin #NioxinSystem2 #Haircare #Hairloss #ThinningHair