Everyone wonders if their eyelashes will grow back if they're cut. This answer is both yes and no because there are a few factors to take into consideration, such as the type of product used and the severity of the injury. The most common factor in this equation is whether or not you used a sharp object to trim your lashes, which could leave them irreparably damaged. You may be able to get your lashes back to their initial length with regular lash extensions!