We have these pins and corresponding cups bought before Christmas so that our daughter grandma can prepare a nice gift Nicholas. I burned the cups as directed. The color of the pens is good and is easy to apply nicely. Unfortunately, the color goes, although the cups do not come into the dishwasher off. Since we were a bit disappointed. But to make it positive to see, you can use the pins yes several times and the cups can thus start fresh paint.
