Iowa Cosmetology Practice Exam

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What is the function of a base coat in nail application?

To add color
To protect the nail bed and enhance polish adherence
To dry the nail polish quickly
To create shine

The correct answer is: To protect the nail bed and enhance polish adherence

The function of a base coat in nail application is primarily to protect the nail bed and enhance polish adherence. A base coat acts as a protective barrier between the natural nail and colored polish, helping to prevent staining from pigmented formulas. It also creates a smooth surface that allows the top coat to adhere better, which can lead to a longer-lasting manicure. While a base coat is not designed to provide color, speed up drying, or add shine—all functions attributed to other products in nail care—it plays a crucial role in manicure longevity, overall nail health, and ensuring that the colored polish applies evenly and stays in place effectively.