Nioxin Cleanser 4 is for For fine, chemically enhanced, noticeably thinning hair. Nioxin Cleanser 4 is a daily volumising cleanser that gently removes residue & DHT from the hair & scalp & safeguards the scalp from drying irritation. Bio Amp adds thickness & strength. Glyco-Colour Shield Dual protection technology designed to safeguard the scalp skin & preserve hair colour. Scalp Protection: Formulated with herbs & botanicals to moisturise & help guard the scalp skin from chemical service residues. Hair Colour Protection: Custom-built molecular technology designed to provide CLINICALLY PROVEN* colour protection & vibrancy. Scalp Access Delivery System helps protect nutrients at they moisturise & energise the scalp & hair combined with SPF 15 scalp protection against UV rays.