Provide normal and thinning hair with definition and hold with Nioxin 3D Styling Thickening Gel. As a part of the Nioxin professional hair styling products line, this hair styling gel with PROTHICK technology gives a noticeable volume boost and a fuller end look. Nioxin thickening hair gel provides strong hold and texture for fuller-looking and smooth-feeling hair, without stiffness or stickiness.