The drying time for nail varnish is about 2 minutes after application, especially if you use a nail varnish drying oil as a finish. This oil speeds up the drying process and ensures that the nail varnish is dry and flawless in just 2 minutes after its final application. If you don't use a varnish-drying oil, it's advisable to leave each coat to dry for 2 to 3 minutes before applying the next one, for optimum results.