Note: Always check clothing labels, and test cleaners and solvents in an inconspicuous area of the garment to make sure they won’t damage the fabric.
The first step is to flush the stain with detergent and warm water. Depending on how fresh it is, you may be able to remove most of the paint. Next, pour a generous splash of alcohol on the mark and, using an old toothbrush, scrub out the stain, adding more alcohol if needed. Once the stain is gone, rinse out any remaining alcohol and then launder the clothing according to instructions.
If 91 percent isopropyl alcohol doesn’t quite do the trick, try using acetone (some nail polish removers are 100 percent acetone), following the steps outlined above.
Check the paint can label to see what solvent is recommended — mineral spirits is a common one. Before applying the solvent, dab any excess paint with a paper towel. Next, turn the garment inside out so that you’re working from the underside of the stain.
Replace the paper towels with clean ones and repeat the process until the paint is gone. Then rinse out the clothing well — removing all traces of solvent — before washing the garment according to label instructions. It is important that you remove all traces of the solvent before washing and drying the garment because of the flammability of the solvent.