What is the main purpose of a base coat in nail procedures?

The primary purpose of a base coat in nail procedures is to provide a smooth surface for the application of nail polish. This is crucial as it helps the polish adhere better, leading to a more even and flawless finish. A smooth base allows for easier application of subsequent layers, reducing the likelihood of streaks or imperfections. Additionally, a base coat prevents staining of the natural nails by acting as a barrier between the nails and colored polish. While other answers may relate to functions that various products can serve, such as enhancing shine or offering nutritional benefits, the key role of the base coat centers on creating that smooth foundation for optimal polish application.