What is the role of base coat in nail application?

The base coat plays a crucial role in nail application by serving two primary functions: providing a smooth surface for the nail polish and protecting the natural nail from potential staining caused by colored polishes. When applied before color polish, the base coat helps to create an even texture, ensuring that the color adheres properly and looks more uniform. Additionally, certain pigments in colored nail polish can stain the nail bed if applied directly without a base coat. By acting as a barrier, the base coat helps to prevent discoloration and damage to the nail itself, thus maintaining nail health and appearance.