System 4 Scalp & Hair Treatment For Fine Hair Chemically Treated by Nioxin for Unisex, 6.76 oz: Exclusive Bioamp complex adds thickness from inside the cuticle and strengthens the hair shaft Nioxin hair treatment is suitable for all types of hair Strengthens the hair shaft For best results, combine with the full Nioxin for Unisex system, including shampoo and conditioner Additional Nioxin scalp and hair treatments sold separately

System 4 Scalp & Hair Treatment For Fine Hair Chemically Treated by Nioxin for Unisex, 6.76 oz: Exclusive Bioamp complex adds thickness from inside the cuticle and strengthens the hair shaft Nioxin hair treatment is suitable for all types of hair Strengthens the hair shaft For best results, combine with the full Nioxin for Unisex system, including shampoo and conditioner Additional Nioxin scalp and hair treatments sold separately