What does a gel polish require for curing?

Gel polish requires a UV or LED light for curing because it contains photoinitiators that react to specific wavelengths of light. When exposed to these lights, the components in the gel polish undergo a chemical reaction that transforms the liquid formula into a hard, durable finish. This curing process is essential for ensuring the longevity and durability of the manicure, providing a glossy, chip-resistant surface that can last for weeks.

Other methods like air drying, heat exposure, or water contact would not create the necessary chemical reaction to cure the gel polish, as they do not provide the specific wavelengths of light needed for the photoinitiators to activate properly. Consequently, UV or LED light is the only method suitable for effectively curing gel polish.