The marker is not erased from the board due to the fact that the surface of the board begins to absorb the marker without the possibility of cleaning.
How to clean a whiteboard from a marker
Hairspray or deodorant - Spray the dirty board and wipe off with a tissue until it dries.
A mixture of water and vinegar - make a solution of 100 ml of water and 5 ml of vinegar, soak a towel in it and treat the surface of the magnetic whiteboard, then wipe dry.
How to clean a whiteboard from streaks
Use a special spray. Treat the surface with it daily before starting work, wiping dry with a microfiber cloth.
Try not to leave the inscriptions for a long time.
Also, do not use abrasive products to clean the whiteboard.
How to erase whiteboard marker
Take a dry cloth or tissue, soak it with nail polish remover (without acetone), hand sanitizer, rubbing alcohol, or any other liquid with an alcohol content of over 60%.
Wipe the surface of the board. Inscriptions made with an indelible marker will be deleted.