Recently I've had a really weird problem. I've been painting for about three years now and using a wet palette for most of that time without this happening but the last few weeks I keep returning to a palette to find paint I'd put on it only the day before has pretty much evaporated leaving just a dry residue. It's even happened with glazes that are 99% medium. It's summer but it's not that hot. What am I doing wrong? I'm getting through my hydration sheets fast and can't explain this. Anyone else ever have the issue?
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