Nioxin Scalp Recovery Medicating Cleanser 33.8 oz/ Liter Size Blended with moisturizing green tea polyphenols and a maximum strength dose of pyrithione zinc for a color safe, sulfate-free skin cleanser that gently soothes and moisturizes the scalp, while leaving the hair manageable, hydrated and shiny. NIOXIN Scalp Recovery Medicating Cleanser helps eliminate seborrheic dermatitis, dandruff and other scalp related problems associated with scalp irritation, flaking and itching as part of total scalp care system. Apply to wet scalp and hair. Lather one minute. Rinse well. Use at least twice a week or daily for best results. Follow with Scalp Recovery Moisturizing Conditioner and Scalp Recovery Soothing Serum.