System 4For Fine, Natural, Noticeably Thinning HairA three step program to treat hair loss. NIOXIN Cleanser™First step in the three step program. A daily volumizing cleanser that gently removes residue and DHT from the hair and scalp to promote a healthy scalp environment. It also provides nourishing vitamins, proteins and amino acids.Features:BioAmp™adds thickness and strength.Glyco-Color Shield™ Dual protection technology designed to safeguard the scalp skin and preserve hair color. Scalp Protection: Formulated with herbs and botanicals to moisturize and help guard the scalp skin from chemical service residues.Hair Color Protection: Custom-built molecular technology designed to provide CLINICALLY PROVEN* color protection and vibrancy.Scalp Access™ Delivery System™ helps protect nutrients at they moisturize and energize the scalp and hair combined with SPF 15 scalp protection against UV rays.