I like too inspect the paint after a few rounds of this. I find swirsl (very light) after a first wash after recent correction!!
No the mitt is new and clean, two bucket, two mitt (upper, Lower) and very light swirls almost speder web like appear. Either I'm too picky or need to be proven that yes swirl free wash does exist. BTW red car and yes did not miss on correction was 100% sun never lies.
Ongoing technique search.