What is the primary purpose of applying a topcoat in nail services?

Applying a topcoat in nail services plays a crucial role in enhancing the overall appearance and longevity of the manicure or pedicure. The primary function of a topcoat is to seal the color polish, which helps prevent smudging or scratching after application. This sealing action creates a protective barrier that locks in the color, allowing it to appear more vibrant and preventing it from dulling over time. Additionally, a topcoat enhances the shine of the nails, giving them a polished and professional finish that elevates the look of the manicure or pedicure.

While some other functions might be considered as benefits of applying a topcoat—such as providing a layer of protection against chipping or fortifying the layers underneath—they are secondary to the primary purpose of sealing color and enhancing shine. Thus, the answer accurately captures the essential reasons topcoat is utilized in nail care.