Nioxin Diamax, Hair Thickening & Breakage Protection Treatment For Thinning Hair increases the thickness of each hair strand for visibly fuller-looking hair. Benefits Hair thickening Xtrafusion increases the thickness of each hair strand for a fuller-looking head of hair. Protects against breakage, strengthening hair and allowing hair to grow longer. Manageable, visibly fuller and noticeably thicker hair after just one use. Apply evenly throughout the scalp. Massage gently at the roots and comb through. Do not rinse off. Use daily.