What type of nail product is specifically formulated to enhance color without changing the nail's shape?

The correct response is gel polish, which is specifically designed to enhance the color of the nails while allowing for the natural shape and structure to remain unchanged. Gel polish combines the ease of application found in traditional nail polishes with the durability and long-lasting finish typically associated with gels. It is cured under a UV or LED lamp, which helps to create a resilient layer that enhances color intensity and shine without altering the nail's natural form.

This product is particularly popular in nail salons because it offers vibrant color with a glossy finish and can last for weeks without chipping, all while so maintaining the integrity of the nail shape. Other products, such as acrylics and nail lacquers, might fulfill different purposes, such as adding extensions (in the case of acrylics) or providing a color coat that may not last as long or requires more touch-ups. A top coat is typically used as a finishing layer over another polish to enhance shine or provide protection, but it does not necessarily enhance color on its own.