I took my Z to the body shop to take care of
several deep scratches
one of the scrathces was on the hood and the guy at the body shop
polished entire hood
and the deep scratch has gone perfectly
but I got more swirls and polish stains on the hood
I have applied about 10coats of zaino before
is it okay to apply Z-5 directly???
or any advice would be appreciate
Thanks!!

 

Huh? I'm not sure what you mean by "apply Z5 directly". What you SHOULD do, if it is as you describe, is take it back to the body shop and show them the "swirls and polish stains" and have them make it right at no additional charge. They should wet-sand it if necessary, but they need to make it right.

Z5 will mask light-to-medium swirls but it won't do magic.

 

but I am worried about if they make it worse