Nioxin System 1 Scalp Hair Leave-In Treatment, Restore Hair Fullness, Prevent Relieve Dry Scalp Symptoms, For Natural Hair with Light Thinning Professional volumizing scalp and hair leave-in treatment for natural hair with light thinning. Award: Behind the Chair Stylist Choice Winner -Favorite Thinning Haircare, 16 consecutive years. Brand Nioxin Item Form Cream Material Feature Natural Hair Type Thin Product Benefits Moisturizes hair and scalp for thicker, fuller hair and increases hair resilience plus moisture balance.Moisturizes hair and scalp for thicker, fuller hair and increases hair resilience plus moisture balance.