Nioxin Pro Clinical System 3 Trial Kit Shampoo Conditioner Treatment New unsealed bottles Nioxin Pro Clinical System 3 trial kit for colored, dry, or damaged hair with light thinning. Includes scalp + hair shampoo (150mL), conditioner (150mL), and scalp care + hair thickening treatment (50mL). Clinically and dermatologically tested; visible results in 30 days.