How do you clean car windows without streaks?
Reviewed by the Skyview Auto Glass technical team — NWRD-, ASE- and DINITROL-trained technicians · Updated November 2026
Quick answer
Use two clean microfiber cloths and an ammonia-free glass cleaner. Clean in the shade, not in direct sun. Spray the cloth, not the glass, wipe inside horizontally and outside vertically, then buff dry with the second cloth. Clean the wiper blades last so they do not re-streak the glass.
What to have ready
- Two clean microfiber cloths — one to wipe, one to buff dry.
- An ammonia-free glass cleaner, safe for tinted windows.
- A shaded spot, a garage, or a cool early-morning time.
- A damp cloth for the wiper blades.
How to wipe without leaving streaks
Work one window at a time so the cleaner never dries on its own.
- 1
Spray the cloth, not the glass
Spray the cleaner onto a microfiber cloth. Spraying the glass sends overspray onto the dashboard and trim.
- 2
Wipe the inside horizontally
Wipe the inside of the glass in horizontal strokes.
- 3
Wipe the outside vertically
Wipe the outside in vertical strokes. If you see a streak later, its direction tells you which side it is on.
- 4
Buff dry before it dries
Buff the glass dry with the second clean microfiber cloth before any cleaner dries on its own.
Clean in the shade, not in direct sun
Heat from direct sun dries the cleaner before you can buff it off, and that is what leaves streaks. Clean in the shade, in a garage, or early in the morning when the glass is cool.
More questions about cleaning car windows
Can I use household glass cleaner on my car windows?
You can, but avoid ammonia-based cleaners if your windows are tinted — ammonia can damage the tint film. An ammonia-free auto glass cleaner is the safe choice for tinted glass.
Why do my windows streak right after I clean them?
Streaks usually mean the cleaner dried before you buffed it, the cloth was dirty, or you cleaned in direct sun. Use two clean microfiber cloths, work in the shade, and buff dry before the cleaner dries.
How do I get tree sap or sticker residue off the glass?
Soften sap with rubbing alcohol on a microfiber cloth, then wipe it away and wash the glass. For stickers, warm them with a hair dryer and peel slowly. See our tree sap guide and sticker removal guide.
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