2 month Rain X Anti Fog test on my living room windows. Left treated/right untreated. It helps but doesn't prevent buildup entirely. : r/electronic_cigarette
Rain-X® Automotive Glass Cleaner Trigger - Rain-X
Rain-X Glass Windscreen / Window Water Repellent 103ml – Wholesale Paint Group
Rain X Anti Fog Review Does it work? - YouTube
Can I use Rain X on the inside of my windshield? - Quora