For cotton and polyester: Apply turpentine and blot with towel to absorb residue. Flush with water. Rub in liquid dish soap, such as Dawn, and let sit 10 minutes. Machine wash according to garment care label. Repeat as necessary.
For washable silk and wool: Apply small amount of liquid dish soap to the stain. Let sit 10-15 minutes. Scrape off paint flakes and soap with dull knife or fingernail. Flush with water. If stain does not begin to fade, take garment to a dry cleaner.