Eyelash extensions are semi-permanent fibers that are attached to your natural eyelashes to make your lash fringe look longer, fuller, and darker. The material can be made of synthetic mink, faux mink, or silk fibers. Most of us offer a variety of extension lengths, curl patterns, and tints so clients can customize their look, such as natural looking, glamorous, or dramatic. To keep eyelashes maintained you should not rub your eyes or wear any mascara.