Gel polish only looks salon-good if it cures properly, and the lamp does that job. Pick the wrong one and your manicure stays soft under the shine, lifts in four days, or takes ten minutes a hand. This guide covers the one spec on a UV nail lamp listing you can ignore, the ones that matter, a quick test to see if your lamp is doing its job, what the safety research really says, and what lamps cost in Singapore right now.