Nioxin Intensive Therapy is filled with high concentration of HTX, A cosmic thickening Xtrafusion Treatment with key hair-thickening ingredients like Niacinamide, Panthenol, and caffeine. Nioxin Diamax Advanced is scientifically designed to deliver visibly thicker-looking hair. Benefits:. Diameter boosting & hair breakage protection, for thicker, fuller hair. Boost your existing hair diameter instantly. Penetrates hair and makes it fuller and more manageable. Thicken existing hair at the roots. Protects hair against breakage, allowing it to grow longer* (*with daily use). Hair thickening treatment for thinning hair. How to use. Apply evenly throughout the scalp. Massage gently at the roots and comb through. Do not rinse off. For exceptional results use daily on wet or dry hair.