Okay, I have a friend who really did lose her eyelashes. It happened to her a couple of times a year, generally coinciding with finals or some other stress. She probably could have used this product since, you know, she had an actual medical condition resulting in lack of lashes. But people like me who just happen to have kind of sparse lashes? Not the kind of people who should be seeking medical treatments, the side effects of which sound really weird, just for cosmetic purposes.