Why LED-lamps more fester dried gel.

The composition of nail extension gels includes a substance that reacts to a specific, for each gel, narrow section of ultraviolet radiation and leads to polymerization of the material (see figure). The greater the radiation in this area, that is, the greater its power, the faster the material hardens.

Traditional fluorescent light bulbs produce a very wide range of light. All the power from the radiation is distributed over this range (green line in the figure). And in each specific area (red lines 1-5) it is small. LED lamps are the opposite: they shine in a very narrow range, and the same radiation power is forced to concentrate in this narrow range (blue line). Therefore, for example, in section 5 it is significantly greater than in any section of the radiation of fluorescent lamps. And the material that “reacts” to this radiation will harden very quickly.

The ability to react only to “their own” radiation explains the fact that most traditional gels do not polymerize in LED lamps. It's like sunbathing under an ordinary light bulb: even if you lie under it all day, there will be no effect.