are the zaino products safe to use on all of the exterior materials, by safe i mean none of that white residue or streaks

 

From what i've seen, the only thing that streaks is Z-6.

Z-2, Z-5 polishes won't leave streaks, just make sure they are totally totally dry/cured when you buff it off.

 

If you are getting any kind of streaks from Z-6 it is one of two things:

1. Paint is too hot to be applying Z-6 or

2. You are using too much Z-6, 1/2 of an ouce of Z-6 will do an entire car surface.

Zaino can be used on any hard smooth surface, glass, paint, chrome, polished metal, etc. etc......