What type of nail treatment involves adding length to the natural nail?

Nail extensions are specifically designed to add length to the natural nail, creating a longer and more aesthetically pleasing appearance. This process typically involves the application of materials such as acrylic, gel, or fiberglass, which can be molded and shaped to your desired length and style.

Adding extensions not only enhances the length but also provides an opportunity for nail technicians to create intricate designs and patterns, as the extended surface allows for more artistic expression. Nail art is more focused on the design aspects rather than the functionality of lengthening the natural nail. Nail filing and trimming, on the other hand, are processes that reduce the length of the natural nail rather than enhance it. Therefore, nail extensions are the only option that directly addresses the need for additional length, making it the correct choice.