Streaks on the windshield can occur due to several reasons, such as improper cleaning technique, using too much cleaning solution, or using a dirty cloth. Sometimes, streaks won’t show themselves until after the job is done, and light hits the windshield from a different angle, so keep your eyes peeled. Thankfully they can be removed, with a little bit more elbow grease, and the following steps.
Re-clean: If streaks appear, start by re-cleaning the affected area using the glass cleaner and a clean microfiber cloth. Apply gentle pressure and use circular motions to remove the streaks.
Use Less Solution: Using too much cleaning solution can leave streaks. Use a minimal amount of glass cleaner to avoid over-saturating the surface.
Change Cloth: Sometimes, streaks can occur if you're using a cloth that's not completely clean. Switch to a fresh, clean microfiber cloth to ensure a streak-free finish.
Check Lighting: Sometimes streaks become more visible in certain lighting conditions. If you notice streaks indoors, take your vehicle outside in natural light to assess if the streaks are still visible.
Buffing: Gently buff the glass with a clean, dry microfiber cloth after cleaning to ensure the removal of any residue and to achieve a streak-free shine.