Apply nail polish remover
This step is important when asking how to get nail polish out of fabric. When you are choosing a nail polish remover, opt for one that contains acetone, as it is highly effective in dissolving the polish. Before applying the remover, make sure to read the label and check if it is safe to use on the fabric. You could test it in a hidden place of the garment as well.
To start, dampen a clean cloth or cotton ball with the remover. Gently dab the stained area, starting from the outer edges and working your way towards the centre. Be careful not to rub or scrub, as this can damage the fabric. Continue dabbing until the nail polish is no longer visible on the cloth or cotton ball.