Draw over your permanent marker artwork with a dry erase marker, and then wipe the marks away with an eraser or dry cloth.
How to Erase Permanent Marker on a Dry Erase Board
Who hasn’t accidentally written on a white board with a permanent marker? Luckily, it’s easier to remove than you think. Here’s how to get permanent marker off a dry erase board. Simply draw over your permanent marker artwork with a dry erase marker, and then wipe the marks away with an eraser or dry cloth. Your dry erase board will be good as new!