Walls are more affected with rust and different types of stains like varnish, inks, wax and many more. It is necessary to remove the varnish stain from the walls. If varnish stain is spread on the walls so it needs properly so it claims to remove the varnish stain. The wall surface is proper so that you can remove the varnish stain from the walls.
If you see that the walls get varnish stain than it is essential to clean the walls to make clean the walls. You must have to use the thinner or any other types of cleaner to clean the varnish stains from the walls. You can also remove the varnish stain by using the turpentine to remove the varnish stain from the walls. You must have to select the proper cleaner to clean the walls. After cleaning the walls you need to apply the wax to give proper finish. The walls gets proper finish by using the proper cleaner too. I think you can remove the varnish or any other stain from the walls.