Glasurit is the manufacturer of car's paint.
so they know best car paint problem than us so read full in following link for ur own understanding
Glasurit | RCC Loss of gloss
and read All Paint Defects section in above website and u all will get full INFORMED information regarding paint defects.
Remember Glasurit is not harsh compound it is only Fine polishing compound.which have no harsh chemicals like others.i have personally used all above mentioned Meguiars and Mothers ,Sonax and some other products BUT i find this one MOST EFFECTIVE.
But apply it with hand by using water to keep rubbing wet.
THANKS