Stain removal is all about speed and technique. Here's the proven method for tackling permanent marker effectively.
Different surfaces need different methods. Test in a hidden area first to ensure no damage.
Apply rubbing alcohol to a cotton ball and dab the marker. The alcohol dissolves the ink.
Spray hairspray (with alcohol) or apply hand sanitizer to the stain. Blot, do not rub.
Non-gel white toothpaste rubbed on permanent marker on walls and other surfaces lifts the ink.
Magic erasers work well on permanent marker on most hard surfaces. Test first to avoid damage.