Things I know work:
If the stain just happened using mineral oil and some essential oils works. When using essential oils make sure to wipe the board down thoroughly and not to leave the raw oil on for to long(over 1-2 minutes) as this can remove the boards finish.
- Letting the mineral oil sit helps to loosen it, though. The longer it sits the better.
Remember not to scratch the surface of the board and so avoid scraping the marker off. These scratches make it so that the ink can get in and discolour the board it is usually hard to remove those stains.
How to Remove Permanent Marker from a Smooth Surface. This works for dry-erase boards:
Find a normal pencil eraser. Make sure that the eraser is clean (no
pencil rubbings/color on it).
Try erasing the surface to make sure that the eraser will not damage
Be gentle and don't rub wildly and it should come off.
Either spill some rubbing alcohol on the surface or dab some of the
paper towel in the alcohol. Then, start rubbing over the permanent
marker area until it comes out (it may take a few reapplications) or
it won't come out any more.
Alcohol is the ingredient in a lot of cleaners.
Spray it over the mark. Then clean off the spray and mark with a cloth
A lot of the oily removers I named interfere with the markers ability to adhere to the surface.
Things I heard that work:
Toothpaste. Scrubbing it in, is said to work.
Vinegar and Baking soda. I am not sure how much this works.
You should avoid putting liquids on the board if the finish is torn or otherwise.
Use plain old coffee. Use it with nothing added - no cream or sugar.
The acid in the coffee will take off the ingredients in the marker.
Simply put a little sunscreen on that permanent marker and wipe it
away. A little kitchen cleaner will remove the sunscreen and you're
back in business!
Use nail polish remover and a cotton swab. The acetone in the nail
polish remover will take off the ingredients in the marker.
WD-40 is said to work, but it may ruin your board. So I wouldn't suggest it.
Don't try using hand sanitizing wipes to clean the board. They can eat
the enamel off the surface of the board.