What is it called when lashes are re-applied after a client has used them for a few weeks?

When lashes are re-applied after a few weeks of wear, this process is commonly referred to as a "Fill." This term signifies the application of additional extensions to replace those that have shed naturally over time or to add more volume as the client's natural lashes continue to grow. A fill allows the client to maintain their desired look without the need for a complete removal and reapplication of all extensions, which would happen in a full set application.

The use of the term "Fill" highlights not only the purpose of maintaining the appearance of the lashes but also the specific technique that involves working with the existing extensions and natural lashes to achieve optimal results. By regularly scheduling fills, clients can extend the longevity of their eyelash extensions while ensuring they look full and beautifully maintained.