What is the effect of flash curing on UV gel?

Flash curing refers to the process of quickly hardening UV gel using a high-intensity light source for a very short duration. This immediate exposure to UV light causes the gel to set rapidly, creating a solid layer. This fast hardening is particularly useful in nail applications, allowing nail technicians to efficiently work on the nails without the gel flowing or moving before it is properly cured.

While there are other benefits associated with gel applications, such as enhancing color or reducing lifting, those outcomes are not the primary effect of flash curing itself. Similarly, a sticky residue may occur as a byproduct of curing but is not a primary action of flash curing. Therefore, the primary impact of flash curing is to harden the gel immediately, making this the correct answer.