UPDATE: The Shower Door treatment is a great success. It stays remarkably clean without regular maintenance. After a full month it finally needed a very quick and easy surface clean with standard glass cleaner.
We used Hybrid Solutions Ceramic Spray Coating. Naturally, most of the time and effort is all about doing a great job with surface prep and cleaning (multi-step):
- Dawn liquid and vinegar with hot water, with 3m scratches pads. Would recommend doing this step twice.
- Detailing clay (use spray detailer as lubricant)
- Windex and elbow grease
- Two coats Hybrid Solutions applied with clean microfiber, 24 hours between coats.
Water just beads into tiny droplets and falls away. We did both sides of the shower door and panel. It is also great for bathroom mirrors (prevents fogging).