Wash with cool water, microfiber cloth; During general cleaning, you can rinse with a solution with the addition of starch - 1 tbsp is added per 1 liter. a spoonful of any starch; Every day you can wipe the frosted glass with a suede cloth or velvet.
Ammonia is added to the water in the proportion of one tablespoon of ammonia per liter of water. The mixture can be poured into a container with a spray bottle and applied directly to the glass, or you can moisten a soft cotton cloth in the solution and wipe the glass, paying particular attention to heavily soiled areas.
You need to apply toothpaste on the glass and let it dry. After a few minutes - carefully polish the scratch with a soft cloth. And someone believes that a thin layer of colorless transparent nail polish will help to make scratches less noticeable. You need to apply it to the place of the scratch and let it dry.