here is an expression of experience from a Royal Shield customer. It is of NO use. Period. I spent 5500 Rs last summers in July and got the car in my display pic Royal Shield coated. I am a bit too finicky about my blackies shine and i do a lot to maintain it. In the search of ultra shine, i went on gambling on RS, but unfortunately I feel I wasted my Money.
All the claims that you dont need to polish your car for 3 years, no bird **** marks, cleaning with wet cloth, no water marks etc etc. all are nothing but marketing gimics, hence CRAP.
Instead I feel that they rubbed the body of my paint for cleaning and perhaps that orignal shine has diminished and doesnot show up untill I polish it. and for that i Use Mother's polishes.
So guys, get a life, and chill out. better to do a contract with your nearest service station wala guy !