Streets explains that while both LED and UV nail lamps cure gel polish, they differ in speed, light type, and product compatibility. “UV lamps emit a broad spectrum of UVA light, allowing them to cure all types of gel polishes, but they take longer, about 2-3 minutes per coat, and require bulb replacements over time,” she says.

“LED lamps, on the other hand, use a narrower UVA range that emits lower UV radiation, reducing skin exposure while curing compatible gels much faster, typically in 30-60 seconds.” In addition to faster curing times, LED lamps have longer-lasting bulbs and require less maintenance, making them the better choice for convenience and safety. However, for those looking for maximum versatility across different polish brands, she says that dual UV/LED lamps offer the best of both worlds.

Streets also advises that, when possible, you should use the same brand nail lamp as your gel polish. Many brands design their lamps specifically to match their formulas, ensuring the polish cures at the correct wavelength and intensity for the best durability and wear time. If your lamp and gel polish aren’t compatible, it can lead to longer cure times (increasing UV exposure), uneven curing (causing peeling or lifting), or even adverse reactions such as contact dermatitis, skin sensitivity, or heat spikes, especially if the uncured product comes into contact with the skin. To avoid these issues, always check your lamp’s compatibility with your polish, especially when switching between UV and LED formulas.