No, you cannot use a steam mop on polished concrete because it won’t only damage it, but also take away years of its life expectancy. Only a micro-fiber mop is advised for it. The steam mop makes the floor porous and allows dust particles to get stuck in them making it unhygienic. The glossiness and excellent finish of the floor fade in this way. Prefer water and cleaner with low pH and avoid any high pH chemicals or harsh products like bleaches or oils.