pencil erasers sometimes work
hHir spray works good on any surface with permanent marker on it.
Well, one theory is that the chemicals contained in the whiteboard marker somehow reacts to the permanent marker, making it rub off, but it is not an excellent way to clean off permanent marker.
The solvent for permanent marker is denatured alcohol (hardware store). But it will also require plenty of elbow grease.
Amputate the affected area.
I don't know if this will work on piano keys, but dry erase markers erase permanent marker on white boards. Write over the mark, then erase the dry erase. If the dry erase doesn't come off the piano keys easily, use alcohol.
hHir spray works good on any surface with permanent marker on it.
I do now. Its the alcohol.
Well, one theory is that the chemicals contained in the whiteboard marker somehow reacts to the permanent marker, making it rub off, but it is not an excellent way to clean off permanent marker.
I have found nothing to get permanent marker off of anything. That is why it is called permanent. It stays.
Not coming off
There are many products available to remove permanent marker from wood without ruining the finish. One product that you can use is Pledge to clean the wood.
I would try fingernail polish remover. That will take permanent marker off of almost anything.
Use permanent marker. Or if you are trying to make lines to divide sections, you can use blue or black masking tape. Note: Even permanent marker isn't permanent on a white board. Most white board cleaners will take it off.
to get permanent marker off my backpack is nail polish remover or it will just faid away eventually
try with an eraser i tried eraser on my desk with a white desk and blue marker and theres such a little stain that u have to squint ur eyes too see it
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