There are also a series of nail polish dryer sprays on the market which interact with the chemicals in nail polish to make it set more quickly.
However, I prefer to use the UV nail polish dryer machine for my clients, since I've found that it simply works the best.
Sometimes with air dryers you can get little ripples or ridges, especially if you have an inexperienced manicurist operating the machine.
UV tends to keep everything even, and it also feels nicer, so clients like it better.
But when it comes down to it, the most important thing when it comes to drying nail is time. You're really only going to get the best results if you give it enough time to dry, and don't try to do anything else until the polish is absolutely set.
If you're really in a fix at home, then you might want to try using a nail polish pen -- they are usually pretty quick drying, and get the job done when you're in a pinch.