Nioxin Scalp + Hair Thickening System 1 is a professional leave-on treatment designed specifically for natural hair experiencing light thinning. This innovative formula refreshes the scalp while enhancing hair volume and shine. Utilizing Transactive Delivery System 2.0 technology, it effectively increases the fullness of each hair strand, providing visible results in just 30 days. The treatment not only thickens hair but also supports scalp health by cleansing impurities and excess sebum, creating a healthier environment for hair growth. Infused with nourishing botanicals and antioxidants, it revitalizes the scalp, promoting overall hair health and reducing breakage.