I’ve accidentally left the lid off the can of paint. Will it be OK?

A skin can form on the top of the paint when it is exposed to air for a long period of time. However – the skin can be mixed back into the paint and the thickened paint can be thinned with a small amount of water, if necessary. If preparing Chalk Paint for an impasto technique, it is best to pour out the paint to be thickened into a separate container. You may want to stir it occasionally while thickening to prevent a skin from forming.

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