Wet a clean, soft cloth thoroughly with warm water and wring it out until it is almost dry.
Rub the cloth over the area of the wall covered with hairspray. Be careful not to press too hard as you can rub away the paint.
Repeat until the hairspray is completely removed. You may need to dampen the cloth several times to completely remove the hairspray.
Mix one part liquid fabric softener and two parts water in a spray bottle.
Shake well to combine and spray the mixture directly onto the hairspray covered wall. Let the solution sit for a few seconds to let it begin to work.
Wipe the area gently with a clean cloth and continue until the hairspray is completely removed.
Dampen another cloth in water and rub it over the area to remove any fabric softener residue.