First things first, have the right tools
Obviously, you wouldn’t use household glass cleaner on auto glass. Always use an ammonia-free and alcohol-free cleaner for auto glass. Using ammonia in a car’s interior can dehydrate the materials and cause cracks and discoloration.
To apply and buff off your cleaners, always use a microfiber towel, just like you would for detailing the rest of the vehicle. Never use paper towels, which will contribute to scratches in the surface of your glass. The softer material and electrostatic charge microfiber towels create will help remove particulates from glass, rather than just spreading them around. If you need to remove particularly gummy residues, you can use mineral spirits or grease remover.
Use the proper technique
How you apply and buff off your window cleaner is every bit as important as the cleaner you use if you want to ensure a quality finish. Consider your working environment. It is best not to clean glass in high heat because cleaning products can evaporate and leave residue.