As you can probably already tell, you can use typical glass cleaners for your glass balustrade. Or, you can also use a mixture or vinegar and water. With any of these, and a microfiber cloth, you can make your balustrade look as if new. Avoid any harsh tools or chemicals, because they can scratch the glass. While cleaning, check the wooden or metal parts of the balustrade (the spigots or the rail), to make sure it’s not rotting or corroding.