Eyelash tape is typically used to help create a more defined eye shape or to aid in the application of eyelash extensions or makeup. To use, you should cut a small piece of the tape and gently place it under your lower lashes or along your eyelid to hold skin or lashes in place. Ensure the skin is clean and dry before application. After completing your makeup or eyelash application, carefully remove the tape by peeling it off slowly to avoid any discomfort.