Nioxin System 4 Cleanser is an extremely gentle cleanser that effectively removes product build up and daily grime without disturbing the hair and scalps natural oil defensive system. The technologically advanced formula, including BioAmp™ which thickens and strengthens the hair shaft from inside the cuticle while Bionutrients and Glyco-Fused Complex™ works to safeguard the scalp from the drying effects and irritations caused by chemical treatments while increasing their longevity. BioAmp provides thicker looking hair by increasing the fullness of each hair strand. Reducing hair loss through strengthening resilience against damage and breakage Contains: Cystine amino acids, Lightweight conditioning and treatment ingredients Glyco-Shield provides protection and moisture balance for colour treated hair while leaving the scalp feeling rejuvenated and refreshed. Contains: White tea extract, Humectants, Peppermint oil protective conditioning agents Scalp Access Delivery System provides sun protection and a clean scalp environment by cleaning away follicle-clogging sebum and environmental residues from the scalp skin. Contains: Vitamins, Botanicals, SPF 15 sunscreen, Purifying agents.