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Using a UV light during nail services primarily serves to ensure a quick curing of products. The UV light accelerates the chemical reactions within UV gel nail polish and enhancements, allowing them to harden and set rapidly. This is particularly important in a nail salon setting, where efficiency and speed are essential to meet client demand and satisfaction.

The curing process not only solidifies the product but also provides a durable finish that is resistant to chips and scratches, making it a practical choice for both the technician and the client. While extending the life of nail polish and enhancing nail appearance are benefits associated with using UV light, these effects are secondary to the primary function of curing products efficiently. Maintaining healthy nails is important, but the curing process itself does not directly affect nail health. Thus, ensuring quick curing is the main advantage of using UV light in nail applications.