How do I clean the Light Up Board?

If you have just used Electric Paint to connect to the electrodes then just twist the Light Up Board out of your project to break the painted connection to the paper. 

Chip the paint off the electrode using a knife.  You can also wash it off with water but its best to chip off as much paint as possible first, then gently wash and rub the electrodes under a tap, make sure the Light Up Board is completely dry before powering it up again.

You can also use a baby wipe if you are worried about getting it too wet.