FTG is like any glaze. By itself will last a few days or 1 wash. I gave up on FTG last year. Not user friendly by hand. Reminded me of 3M's IHG. After several attempts I finally got the hang of FTG. Use a mf appl, do a small panel at a time, apply THIN (a little thicker than Zaino) and WO. Fills in well like most glazes but nothing great. I would top with FMJ. Good Luck.