Nioxin System 4 Scalp Therapy Revitalising Conditioner for colored, dry and damaged hair with progressed thinning is the second step of a three part Nioxin regimen, specially formulated to strengthen the hair and amplify hair structure. This lightweight nourishing conditioner helps to retain moisture balance, provide hair resilience and reduce breakage, leaving the hair healthier and fuller-looking. Clinically proven to reduce by up to 91% hair fall, due to breakage