Product Description Nioxins Scalp Therapy Conditioner System 4 for color treated hair with progressed thinning is the second step of athree part Nioxin regimen, specially formulated to strengthen the hair and amplify hair structure. This lightweight professional hair & scalp conditioner helps to retain moisture balance, providing hair resilience reducing breakage and leaving the hair fuller-looking. Features & Benefits Professional hair & scalp conditioner for colored hair with progressed thinning. Color safe conditioner to combat hair with progressed thinning. Lightweight conditioner, hydrates hair and scalp for thicker, fuller-looking hair. Hydrates scalp and hair from root to tip from the first use. Strengthens hair against damage and breakage. Nioxin System Kit is designed to strengthen the hair and amplify hair structure.