How can I effectively remove dried glue from leather?

To effectively remove dried glue from leather, you can try using a mild solvent like rubbing alcohol or acetone. Apply the solvent to a clean cloth and gently dab at the glue until it starts to loosen. Be careful not to rub too hard to avoid damaging the leather. Once the glue is softened, you can gently scrape it off with a plastic scraper or your fingernail. Finish by cleaning the area with a leather cleaner and conditioner to restore the leather's shine and texture.