There are generally three types of eyelash extensions: mink, silk, and synthetic. Each of these options has a typical life span of approximately six to eight weeks, but the life you get out of your extensions is mostly dependent on your own lash cycle (which can be as short as two weeks and as long as eight weeks). Since your lashes are at different stages in their growth cycle at any given time, your extensions won’t all fall out at once, and you might find that gaps start to appear a few weeks after having the extensions put in. The life span of your lashes will also depend on how well you care for them after application—and, luckily, there are plenty of things you can do at home to help preserve your look. Although there isn’t much you can do to stop your natural lash shedding cycle, we spoke to several experts in the industry who agree that there are a number of steps you can take to get the most out of your eyelash extensions.