We have known for some time that a certain category of glaucoma medication (prostaglandin analogues) cause users to have extensive eyelash growth.  This side effect led to Allergan's production of Latisse, their glaucoma medication bimatoprost used specifically to stimulate eyelash growth.  If this drop causes eyelashes to grow, why wouldn't it work on hair? Lumigan is made by Allergan, who also markets Latisse...