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How to remove acrylic paint from skin
Treat the paint spot immediately.
If you've just gotten paint on your skin and it hasn't yet had time to dry, treat the area right away. Once the paint has begun to set up, it will harden and solidify in place, making it much harder to remove.
Paint that is still wet should wash away without much trouble. This is especially important for bigger spills, as they will be more unsightly and harder to get out once they dry.