Strengthen and moisturize your hair with Nioxin's 3-part System 4 Scalp Therapy Conditioner for Colored Hair with Progressed Thinning. Thanks to its BioAmp 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 second step of a 3-part Nioxin regimen, designed to strengthen the hair and amplify hair structure. | Nioxin System 4 Scalp Therapy Conditioner, 33. 8 oz | Dermstore