Park in shade and let the windshield cool
Gather a microfiber cloth, glass cleaner, and a clean dry towel
Lower the sun visors
Spray glass cleaner onto the microfiber cloth, not directly on the glass
Wipe the inside windshield in overlapping motions
Clean the corners and edges with a folded cloth
Use a second dry microfiber cloth to remove streaks
Repeat on any remaining spots until clear
Replace dirty cloths if they become damp or greasy
Finish by checking the glass from different angles for streaks