DFI Clear-Fusion V Surface Protective Coating DIY Kit

I purchased the DFI at home kit a few months ago. The KIT itself is pricey however, I have tried various other products and sprays etc in the past to remove hard water stains without success. The restoration powder included in the kit with appropriate elbow grease and time does work. My shower doors once stained from a few years of neglect are now clear and with application of the spray are repelling water. The homeowner must still squeegee and wipe any remaining water from door. With included micro cloth. There is no substitution for maintenance. It just has to become a daily habit. That said, any water buildup seems to clean up pretty easy now with the coating. Hopefully the coating will last as advertised. Use a good ventilation when applying because there are fumes.