By Kerry Pianoforte • Associate Editor The use of UV lamps in nail salons has gained widespread use recently. The process is relatively simple; a gel that contains a photoinitiator is applied to the fingernail and is cured under a UV lamp. When the photoinitiator is exposed to the proper UV light wavelength and intensity, it gives off a particle called a free radical. The free radical will initiate a polymerization reaction with the resins in the gel system. The results are a long las...