I've been experimenting and I LOVE the non-toxic, thixotrophic, heat-set oil paints called "Genesis." I can even use their colors to exactly match the colors in my preferred palette! Here is their website:
http://www.genesisartistcolors.com/ If I were an ala prima painter I would switch to these paints in a heartbeat!
However, since I like to work with oil glazes, and haven't quite been able to translate this important technique into the new medium, I need some help with chemistry.
I would like to do my underpainting with Genesis and then "seal" the surface (to form an inert buffer layer) with some substance so that I can use oil glazes and my regular medium (liquin) on top of this. (Note, oil paint and Genesis don't mix - even when dry).
Any suggestions?