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