Yes, hairspray can dry gel nail polish. If you're in a pinch and need to get your nails done right away, hairspray is the way to go. But it's best not to use it as a long-term solution. Instead, try some quick-drying polish or gel polish instead of hairspray. If you need a quick fix, this is the best way to go. But if you're looking for something that's going to last more than one day, try an at-home manicure kit instead.