I'm pretty lazy in this department. I lay an old cotton dish cloth that has been used for quite awhile as a rag, over the top of my palette. It keeps the blobs fairly moist at the outside.
I scrape down the sloppy center but leave part of the mixed shades that I've been working with. This gives me a place to start again.
Doesn't the freeze thaw process have at least the potential to changing any of the elements in your paints? I'm thinking separation of some crossed linked preparation. At least by day 3. But thats intuition not science.
Anyone have any science?
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