Strengthen and moisturise your hair with Nioxins 3-part System 4 Scalp Therapy Revitalizing Conditioner for Colored Hair with Progressed Thinning. Thanks to its Bio Amp technology, this professional hair care product helps retain moisture balance, providing hair resilience. Lightweight Nioxin density-protecting conditioner is specially indicated for colored hair with progressed thinning and leaves it thicker, fuller-looking. Nioxins Scalp Therapy Revitalizing Conditioner is the second step of a 3-part Nioxin treatment, designed to strengthen the hair and amplify hair structure.