Base coats are used in nail coatings and are designed to have good adhesion to the nail plate. In a traditional nail polish it can also prevent any staining by the colour coating.
It is essential to use with a UV gel system (unless the specific brand has been formulated with its own adhesion properties) as it will adhere to the nail plate and also to the subsequent layers.
Base Coat
![Nail Base Coat](https://nailknowledge.org/wp-content/uploads/2021/06/Basde-Coat-1024x546.jpg)