Nioxin Cleanser Shampoo System 1 for Fine Hair with Light Thinning is a detoxifying shampoo for fine, thin, non-chemically treated hair that removes product build up, minerals, pollutants, and toxins. Benefits Detoxifying shampoo for fine, thin, non-chemically treated/natural hair. This detoxifying shampoo removes buildup, pollutants, and toxins to leave hair growing healthily with body, volume and shine. Provides an optimum scalp environment. Apply to wet hair, gently massage into scalp and hair, lather 1 minute, rinse thoroughly, use daily. Use in combination with Nioxin System 1 Scalp Therapy Conditioner plus Scalp and Hair Treatment.