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

• A. Adds color and seals the top coat instantly.
• B. Removes oils from the nail and prepares it for polish.
• C. Provides adhesion, protects the natural nail, and creates a smooth surface for color.
• D. Increases nail flexibility and growth rate.

Answer: (C)

Base coat works like a primer for the nail. It provides adhesion between the natural nail and the color, helping the polish grip the nail rather than lift or chip. It also acts as a protective barrier, reducing staining from pigmented shades and shielding the nail plate from moisture and pigments. Additionally, it creates a smooth canvas by filling in tiny ridges or imperfections, so the color applies evenly and lasts longer.

That’s why this option fits best: it covers adhesion, protection, and a smooth surface. Removing oils is done by a dehydrator, not the base coat; adding color and sealing with a top coat aren’t its primary roles; and base coats aren’t aimed at increasing growth rate.