Disposable glue wells are convenient tools used in the application of lash extensions. These small, disposable containers serve as wells to hold a small amount of adhesive during the lash extension process. They offer a hygienic and practical solution, allowing lash artists to portion out just the right amount of adhesive needed for each application without the risk of cross-contamination between clients. After use, they can be disposed of, ensuring a clean and efficient workspace for each lash application session.