You should always test products and solutions on small, hidden areas first before using them on larger surfaces to avoid unwanted effects.
Alternatively, you can use nail polish remover if the rubbing alcohol does not work. Just remember to wipe the area clean with water before applying the nail polish remover onto the stain. [4] X Research source
Remember to test the eraser on a small, hidden area first before applying it to larger surfaces.
Use a sanding pole to sand large areas like an entire wall. To avoid a patchy appearance, you may want to sand, prime, and repaint the whole wall.
You can use a gentle cleanser or plain water to clean your wall.
Let the first coat dry completely before applying a second or third coat. When painting the wall, try to paint in full daylight so you can get an even finish. You can sand in between paint jobs to get a professional look. Apply as many coats as you need until the color you want is achieved.
