Upgrade your hairstyles with the NIOXIN Density Defend Hair Thickening Gel. The hair gel doubles as a volumising treatment to create the illusion of fuller-looking strands. Ideal for thinning hair types, the gel adds visible volume and texture to limp, lacklustre lengths. The thickening hair gel delivers texture and definition to hair without stickiness or greasiness. Powered by PRO-THICK™ Technology, the formula contains a complex of thickening polymers to enhance the look of shape and density.