Nioxin System 4 Cleanser 1 LitreFor Fine, Natural, Normal to Thin-Looking HairNIOXIN Cleanser™ 4 LitreA daily volumizing cleanser that gently removes residue and DHT from the scalp and hair to promote a healthy scalp environment. It also provides nourishing vitamins, proteins and amino acids.Features:Bio Amp™ adds thickness and strength.Activ-Renewal™ gives a more youthful-looking scalp and fuller, healthier looking hair.Transactive Delivery System™ delivers essential nutrients onto the scalp which improves the appearance of thinning hair and creates an environment for fuller, healthier looking hair.