* Gel Polish Requires Curing: Gel polish doesn't air dry like regular nail polish. It contains photoinitiators that need to be activated by specific wavelengths of UV or LED light. This process is called curing and is what hardens the gel into a durable, long-lasting finish.
* Without the Lamp: Without the UV or LED lamp, the photoinitiators remain inactive. The gel polish will stay sticky, gooey, and won't harden properly. It will be very prone to smudging, chipping, and peeling.
* Misconception about Activators: It is true that there are acrylic nail systems that utilize an activator liquid to harden. Gel nail polish does not use this method. The UV or LED lamp is the gel polish's activator.
In short, the UV or LED lamp is essential for curing gel nail polish. Without it, the gel will not set and will remain in a liquid state.