Nioxin System 2 Cleanser & Scalp Therapy for Fine Thinning Hair Duo 33.8 oz For Fine or Thin-Looking Hair For Noticeably Thinning Hair Nioxin System 2 Cleanser - for fine, non-chemically enhanced hair that noticeably thinning - gently cleanses and removes toxins like DHT. BioAMP adds thickness and strengthens the hair shaft. Bionutrients and Activ-Renewal help provide a more youthful-looking scalp complexion. Unique Scalp-Access delivery system helps protect nutrients as they nourish the scalp and hair.