Water on airbrush paintjob

[oolaa]

Hello!


Whenever I get water on my painjobs, it leaves permanent stains. Does this happen to any of you as well?

I have made experiments where I apply clean tap water with a brush to unvarnished, gloss varnished and matt varnished surfaces. I always get these annoying little marks.

I use Vallejo acrylic colours and varnishes and I always let the paintjob dry for at least 24 hours before I start experimenting.

Does anyone know why this is happening or how it can be avoided? It is driving me crazy!