You’ve probably heard of Latisse® (brand name Lumigan, manufacturer Allergan, Inc.) It’s the first FDA-approved treatment to grow eyelashes for people with inadequate or not enough lashes. The popular eyelash lengthener has been on the market since the FDA approved it in December 2008. How Does Latisse Work? According to studies, Latisse lengthens, thickens and darkens eyelashes via a process that isn’t fully understood. Like the hair on your head, eyelashes sprout, grow for a while and eventually fall out. Latisse both extends the growth phase and increases the number of hairs making your lashes longer and lusher over time.