1. Hand wash the plates after your event. As you wash them place a paper towel or napkin between each plate and set aside until the next day (or in one case for me - after a few weeks).
2. Soak the entire stack of plates in warm soapy water for about 10 minutes.
Note: The paint will stick to the paper napkin and sometimes almost falls right off of the plate.
3. Sometimes you'll have to use your fingers to rub it all little but it's not hard to do. There is a soap in liquid starch so when it gets wet it helps the paint to slide right off. It's very interesting to me that it also acts as a glue and holds the fabric to my kitchen walls and paper to other temporary projects around my house.