Thanks Corey for your support and your answers. I found your reply very interesting especially the point that when solvents evaporate holograms disappear.

After 4 mounths I have used UK on my car without any problems yesterday I found a section of the bonnet with some water spots because I made the mistake to leave undried water on it. In the next days I'll try to remove them with CarPro Spotless.

Thank you again.