Glass Coating
Inorganic Glass Coat firmly layers of crystallized silicon dioxide (SIO2) which have very high strength level from 5H to 9H (it is very close to the diamond hardness level which is 10H) As much concentrations of SIO2 are as high that much pure and hard glass , normally inorganic glass coating having concentration of SIO2 from 70% upto 90 % and as much high concentration that much expensive glass coating.
Glass coating hardness depend upon the surface hardness on which u applying so if any glass coating company claim their glass coating provide hardness 9H than its not mean on every car surface and paint quality it will give same 9h hardness , for example if glass coating apply on Suzuki mehran than definitely hardness level will be 4h to 5h while same glass coating apply on S class Merc than sure it will touch the max level of hardness, Since Glass coating give a hard shell on surface so it give max protection from UV rays means no color fading , give depth in paint, mirror like reflections since hard shell layer so resist to swirls and scratches ( i use word "resist " not scratch proof or bullet proof ), provide Hydrophobic layer means water wont stay on surface , dont leave water marks on treated surface and life can be from 3 years to 10 years depend upon quality of Glass coating , application method and maintanance
Royal shield not glass coating it was Organic paint coating.
Organic coatings are paint coatings and not glass coatings, what u see available on autogeek and polish bliss type sites mostly Organic paint coatings, Organic paint coatings are synthetic man made products and like paint sealants but their protection is stronger and longer than normal paint sealants like 1 year to 2 years depend upon make , application method and maintanince later on.
Glass coating is totally safe for ur beloved hard earn car infact will enhance its beauty and protection for the many years to come and will give u better re-sale of car.
Here is one of my Ex ride Bilori treated her skin with Glass coating last year, recently it got hit from back side on lahore canal road , bumper crack but still no scratch on paint nor paint peal off