Massachusetts Board of Cosmetology Practice Exam

The primary purpose of using a base coat in nail services is to prevent stains from polish. A base coat serves as a protective layer that helps to ensure that the pigments in nail polish do not penetrate the natural nail. This is particularly important with darker colors or highly pigmented polishes that can leave unwanted discoloration on the nails. By applying a base coat, the nails are shielded from such staining, which preserves their natural appearance and health. Additionally, while base coats can sometimes contribute to strengthening the nails and may have glossy finishes, these aspects are secondary to their main function of preventing color transfer from the polish. Overall, the use of a base coat enhances nail care by retaining the integrity and aesthetic of the natural nails.