Eyelash extensions are a semi-permanent treatment to improve the appearance of your natural lashes. During this procedure, individual lashes are attached directly to the natural lashes. It may take a few hours to complete. Eyelash extensions may stay intact during the growth cycle of your natural lashes, which lasts between 6 and 8 weeks. Many material options are available, such as mink, silk, plastic fibers, and faux mink. Aftercare is very important to keep your eyelash extensions look natural and fresh. In the next sections, you will learn more useful tips for proper maintenance of eyelash extensions.