 Do lead nail lamps also emit UV lights? Yes, they do. So even though there is a difference between UV bulbs and lead bulbs, the light emitted in your salon lamp will still fall within the UV range. Nowadays, we use lead lamps in the salon because it's simply faster. You only need to cure usually in 30 seconds versus two minutes in a UV lamp. But the light emitted by a lead lamp also falls within the UV spectrum. The difference between light emitted by lead bulbs and by UV bulbs is that the spectrum of a lead lamp is narrower. And so UV lamps emit light of a broader spectrum. So the light is more scattered within side the lamp. And this is also why with lead lamps it's very important the position of the fingers in the lamp because the lamp is directed to these positions.