Removing permament marker on a whiteboard?

Someone wrote on a white board at work with a permament marker. Any ideas on how to successfully remove it?

Try medical alcohol. If that doesn't work - well, nail polish remover will take off anything, uhm, probably including the plastic of the whiteboard haha, so be careful

An easy way is to put white board erasable marker over the permanent marker, wait a few seconds and then wipe it off. Do this a couple times, the whiteboard markers are made to be dissolveable, and when they get over the other layer they also dissolve that part too...I'm not sure exactly how it works but try it, it always does for me.

you know those alcohol wipes you get with 1st aid boxes try them they work on my white board when I accidently put permanent maker on it.