It is a time consuming job, de-tar / T-cut / polish / hard-wax.
Did my RS about 4yrs ago and agreed hard wax gives a lovely finish, when I wash the car it is just water on the body and a little detergent on the wheels. People don’t believe me when I tell um, just water🤣
Job for next spring to redo it over again.
Art for hardwax is warm but not sunny day and only apply to a small area then buff it up with clean cloth, even a yr later I would spot an area where hardwax was thick 🫢
I used about half a tin on RS.