Oh no, a dried nail polish spill on the sofa can feel like a disaster, but don't panic! With a little patience, you can often work that stain out.
First, you'll want to gently scrape off as much of the dried, flaky polish as you can. You can use something like a dull knife or the edge of a credit card for this. The goal is to remove the excess polish without snagging or damaging the fabric.
Next, and this is the most important step, you need to do a spot test. Find a hidden area on your sofa, like a seam on the back or underneath a cushion. Dab a small amount of your chosen cleaning solution onto a cotton swab and apply it to this hidden spot. This will show you if the solution will bleach, discolor, or damage your sofa's fabric. It's best to start with a non-acetone nail polish remover, as it's a bit gentler. If that doesn't work, you can try an acetone-based remover, but definitely test it first, as acetone can melt certain synthetic fabrics.
Once your spot test is successful, you can tackle the stain. Lightly dampen a clean, white cloth with the nail polish remover. Instead of rubbing, which can spread the stain and push it deeper into the fibers, you should blot the polish. Start from the outside edge of the stain and work your way in. As the polish transfers to your cloth, switch to a clean section to avoid reapplying the stain. Keep blotting gently until the polish is gone.
After you've removed the polish, you'll want to clean up any remover residue. Mix a little mild dish soap with some water and use a fresh cloth to gently blot the area. Finally, blot the spot with a clean, dry towel to soak up any remaining moisture and let it air dry completely.
