Halloween press-on nails can last anywhere from 1 to 2 weeks, depending on the quality of the nails, the adhesive used, and how well they are applied and maintained. If you use glue instead of adhesive tabs, they may stay on longer—around 10 to 14 days. If you want them to last closer to two weeks, applying a layer of gel top coat and curing them under a UV lamp can help extend their wear time, just like you did with the gel trick.
For shorter wear, adhesive tabs may only last a few days, making them ideal for a temporary look.