Put some Dawn on it.
get a cloth and soak it with gasoline
I have used Axe cologne spray and it has worked really well.
I have found nothing to get permanent marker off of anything. That is why it is called permanent. It stays.
Not coming off
Try Isopropyl (rubbing) alcohol. Not just for hair... I don't know if this works on leather or not, but I've used hairspray to remove permanent black marker from a crushed velvet sofa. (I wonder if it's the alcohol in it?)
I would try fingernail polish remover. That will take permanent marker off of almost anything.
As a teacher I have gotten marker on just about anything it was possible to get marker on and never have been able to get marker out of leather. You could try a shoe maker to see if he has something to remove it or go the store where you bought the couch and see if there is something that will remove it.
to get permanent marker off my backpack is nail polish remover or it will just faid away eventually
you use sunscreen
bleach or hard scrubbing um, try this, put dry erase marker on top of the permanent marker and erase it with a tissue
A permanent marker was used to stay forever, but they don't. A regular marker is easy to wash off and doesn't stay for a very long time.
a black permanent marker by the brand sharpie that produce the best permanent markers in the world