A base coat is a type of nail polish applied before the color polish. Its primary purpose is to create a smooth surface for the color to adhere to, helping to prevent chipping and extending the life of the manicure. Base coats often contain ingredients that protect the nails from staining and damage. In addition to protection, some base coats are formulated to address specific nail concerns, such as strengthening weak nails or providing hydration. Using a base coat is an essential step in achieving a professional-looking finish, making it a popular choice among those who enjoy nail art and manicures.