For Fine, Natural, Normal to Thin-Looking Hair A daily volumizing cleanser that gently removes residue & DHT from the scalp & hair to promote a healthy scalp environment. It also provides nourishing vitamins, proteins & amino acids. This was developed by Nioxin lab with advanced formula which are: Bio Amp adds thickness & strength. Activ-Renewal gives a more youthful-looking scalp & fuller, healthier looking hair. Transactive Delivery System delivers essential nutrients onto the scalp which improves the appearance of thinning hair & creates an environment for fuller, healthier looking hair. How to use: Apply to wet hair & lather, leave on for 1minutes, & then rinse thoroughly. For best result, follow with other two Nioxin System 1 products.