What to use to remove hazy in paint.

Well I am confused,when the area in the quarter witch is about 5 inches and about 16 inches long was wet sanded to remove dust this was done about 4 years back,not now,he used a buffer with some kind of polish,I had bad feeling for the body man so there is no way he will not answer my call as to what he used.I polish my car once a year and that has work some what,just looking some kind of polish that is GREAT, what trailbeast sudgeated sound kind of harsh maybe not.