Gel polish is:

Gel polish is primarily recognized as an alternative to traditional nail lacquers. It possesses unique attributes that differentiate it from regular nail polish, such as a longer-lasting finish and a faster drying time due to the curing process under UV or LED light. Unlike traditional nail polishes, which can chip and require frequent touch-ups, gel polish adheres better to the nail and maintains its shine for weeks, making it a popular choice among clients seeking a durable manicure.

Other choices do not accurately reflect the versatile nature of gel polish. While it can be used as a base for other products, it is not defined as a base coat for regular polish. Gel polish is also suitable for both manicures and pedicures, not limited to only one type of service. Lastly, while it can indeed be used by professionals, advancements in the accessibility of gel products have made them available for personal use as well, so the assertion that they are only for professional use does not capture the full scope of gel polish applications.