Sure, the occasional plucked lash is nothing to write home about, but what happens if they start accumulating overtime? Do those eyelashes grow back, or are we doomed to a lashless future once we blow our final wish into the breeze? Here, our investigation. As long as your lid skin remains intact, however, your eyelashes should grow back in. Even if you’re suffering from an underlying condition, like alopecia areata or hypo-thyroid disease, “once treated, their lashes [grow] back,” Ciraldo says. In other words, no need to mourn every lost lash, so long as your lids remain healthy. You might also want to try sleeping on your back in order to avoid that physical stress; in addition to tugging on your delicate skin and causing wrinkles later in life, your pillow can have quite the effect on your lids as well.