Nioxin System 2: For Fine Hair. Chemically Enhanced Hair | Early Stages of Thinning. Kit contains: •Nioxin Cleanser System 2: Gently cleanses and removes toxins, residue and DHT •Nioxin Scalp Therapy System 2: Conditioner moisturizes and energizes the scalp and hair. •Nioxin Scalp Treatment System 2: Daily scalp treatment used to improve the appearance of thinning hair. SPF 15 protects scalp skin from harmful UVA/UVB rays.