Red Seal Hairstylist Practice Exam

The function of a base coat in nail services is primarily to protect the natural nails and improve the adhesion of nail polish. When a base coat is applied, it creates a barrier between the natural nail and the color polish, which helps to prevent staining of the nails from darker polishes. Additionally, a base coat helps the color polish adhere better, leading to a smoother application and potentially enhancing the longevity of the manicure.

While other options present beneficial aspects of nail care, they do not accurately describe the core function of a base coat. Adding color pertains to the color polish itself, and providing a glossy finish is typically associated with top coats, which are applied after the color polish. Facilitating quicker drying may occur with some products, but it's not the primary role of a base coat. The emphasis on protection and adhesion is what truly defines the importance of a base coat in a nail service.