Nioxin products provide help, and more importantly results, to people experiencing thinning hair. Nioxin's System 5 Scalp Treatment works in conjunction with Nioxin's 3 part treatment system to deliver fuller looking hair, smoothing control and moisture balance to normal to thin-looking, medium to coarse, natural or chemically treated hair. It also protects the scalp. Technologies Smooth Plex-Provides moisture balance, smoothing control and reduces hair loss through strengthening resilience against damage and breakage. Transactive Delivery System-Cleans away follicle-clogging sebum and environmental residue from scalp leaving skin feeling clean and healthy. Glyco-Shield- Provides protection and moisture balance to chemically treated hair while leaving the scalp feeling rejuvenated and refreshed. Directions For best use, use in conjunction with Nioxin's 3 part daily use treatment. First, cleanse with System 5 Cleanser then apply System 5 Conditioner to wet hair and leave in between 1 and 3 minutes before rinsing out. Finally, apply the leave-in System 5 Scalp Treatment.