How to store left over acrylic paints

There are several points that should be observed when storing acrylic paints. Acrylic paints should never be frozen. That’s a no-no! I use deep dish Hefty oval Styrofoam platters. One to hold the acrylic paint and the other platter I use as a top to cover the palette. Take a sharpie and write a “T” for the top platter so as not to turn it over. I spray the paint with distilled water and cover with the inverted platter. Then I use a 2 to 2.5 gallon plastic Zip Lock bag to store the palette. It works great! I wouldn’t store any used paint for more than a few days to avoid molding issues. If you notice any signs of mold throw it all away. It’s not worth risking your health for the sake of saving a few bucks.
Paint brushes that are not dried and stored properly are notorious for carrying mold. Many artists are unaware of this. Be sure to wash, dry and store your paint brushes properly.
The paints used in this photo were stored for a long time (approximately 2 1/2 weeks) without molding.
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