What is the purpose of UV lamps in nail services?

The purpose of UV lamps in nail services is to cure gel nail products. When gel products are applied, they contain photoinitiators that react to ultraviolet light, leading to a chemical reaction that hardens or "cures" the gel. This process creates a durable finish that is resistant to chipping and wear, which is one of the key benefits of using gel products over traditional nail polish.

While drying regular nail polish is a common misconception, it actually does not require UV light and instead air-dries. Sanitizing the nails typically involves using antiseptic solutions or alcohol rather than UV light, and enhancing color might refer to using products like nail polish or gel, but it doesn't specifically relate to the functionality of UV lamps. Therefore, the correct focus is on the curing of gel products, making option B the accurate choice.