New Mexico Cosmetology Practice Exam

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What is the primary purpose of a base coat in nail care?

To add color
To protect the nail and improve polish adhesion
To strengthen the nail
To enhance shine

The correct answer is: To protect the nail and improve polish adhesion

The primary purpose of a base coat in nail care is to protect the nail and improve the adhesion of nail polish. Applying a base coat creates a barrier between the natural nail and the colored polish, which helps to prevent staining from pigmented polishes. Additionally, the base coat provides a smoother surface for the polish to adhere to, reducing the risk of chipping and extending the longevity of the manicure. This enhances the overall appearance and durability of the nail polish. While other options may contribute to the nail care process—adding color is the role of colored nail polish, strengthening the nail is often achieved through specific treatments designed for that purpose, and enhancing shine is typically a function of top coats—none fulfill the protective and adhesion-related functions that are crucial when applying nail polish.