PSI Texas State Board Nail Tech Practice Exam 2025 - Free Nail Technician Practice Questions and Study Guide.

When polishing fingernails, applying thick coats is not a recommended procedure. The primary goal of polishing is to achieve a smooth and even finish, which is better accomplished with thin, even layers of polish. Thick coats can lead to a variety of issues, including uneven drying, a longer drying time, and a risk of smudging or chipping. Moreover, if the polish is too thick, it may not adhere properly to the nail surface, ultimately compromising the longevity and appearance of the manicure.

In contrast, removing old polish, applying a base coat, and using a top coat are essential steps in the polishing process. Removing old polish ensures that the nail surface is clean and free of residue, which allows the new polish to adhere properly. The base coat prepares the nail and provides a barrier that can enhance the polish's adherence and protect the nail from potential staining. Lastly, a top coat seals the polish, adds shine, and increases the manicure's durability, making these procedures integral to effective nail polishing.