Prepare the scalp and hair for a complete hair thickening treatment with Nioxin’s three part System 4 Cleanser for Colored Hair with Progressed Thinning. Thanks to its Pro-Color Shield technology, this professional hair product helps remove sebum, fatty acids and other tal residue from the scalp and hair. Nioxin’s derma-purifying shampoo deeply cleanses the scalp and provides thicker, fuller-looking hair. Nioxin’s cleanser is the first step of a three part Nioxin regimen, designed to strengthen the hair and amplify hair structure. Strengthen and moisturize your hair with Nioxin’s three part System 4 Scalp Therapy Conditioner for Colored Hair with Progressed Thinning. Thanks to its Amp technology, this professional hair care product helps retain moisture balance, providing hair resilience. Lightweight, Nioxin's density-protecting conditioner is specially designed for colored hair with progressed thinning and leaves it thicker, fuller-looking. Nioxin’s Scalp Therapy Conditioner is the snd step of a three part Nioxin regimen, designed to strengthen the hair and amplify hair structure.