One quick light spray over should change the refractive index enough that they don't appear frosty any more; at least on the rare occasion I've needed to it has

Thanks Nathan, might give that a go if I'm feeling brave

I have to say it was a "close the eyes and spray" moment for me when I first tried it!

Happened on my last batch, but only to flags!
Quick respray later and they were fine.  

Quote from: toxicpixie on 30 March 2015, 08:30:22 AM
I have to say it was a "close the eyes and spray" moment for me when I first tried it!

It has frosted on a few occasions but after the first stage of trauma
a swift light spray did sort things out. I was told once that if you spray outside the dampness in the air can mess with the spray content  (well this is Britain after all)

Quote from: phenallred on 30 March 2015, 09:36:58 AM
It has frosted on a few occasions but after the first stage of trauma
a swift light spray did sort things out. I was told once that if you spray outside the dampness in the air can mess with the spray content  (well this is Britain after all)

Dampness makes it unusable for me and the Vallejo varnish is considerably cheaper; I won't be going back to sprays anytime soon