Kids adore writing on whiteboards using dry-erase markers. However, when the marks stray off the board and onto your semi-gloss or high-gloss walls, then no amount of erasing will remove them. Dry-erase markers are made of pigment particles combined with release agents which make them wipe off whiteboards, but the particles can become trapped in porous surfaces such as walls. Removing dry-erase marks from walls requires gentle scrubbing with either a synthetic or a solvent.
Pour rubbing alcohol on a cotton ball and stain the mark, using new cotton balls as needed.
Spray the marks using cloth stain-remover spray. Permit the spray to stay on the mark for up to 15 minutes before blotting it away with a soft white fabric.
Apply a pea-sized amount of plain white toothpaste into the seams of a toothbrush that is soft and gently scrub the mark.
Spray the mark using oil-free hairspray and stain it with a soft white fabric. Wash the wall using a drop of dishwashing liquid on a damp sponge afterward.
Paint over the washed place with latex primer if you remove some of the paint. When the primer is dry, repaint the spot.