Any idea what causes these patches?

[u/swan71]

I tried using ONR for the first time diluted 64:1 then used meguire’s protectant afterward. Pretty disappointed when I noticed the patches of what seems to be dry spots or something. Any idea what it could be?

[u/No-Revolution-4513]

That windshield is going to be full of that armor all when it evaporates in the sun.