This is just one thing that makes graphene coatings better than ceramic coatings, With it, that water spotting will not happen! Ceramic coatings retain heat, Graphene coatings actually reduces heat, so prolonged water spotting is a non issue.

Brand: Glasklare
Type: Paint Sealant
Unit Type: Unit
Volume: 50 ML
graphene coating: 10H
Ceramic coating: 10h
Country/Region of Manufacture: China