I got Latisse from my dermatologist and I'm almost at the 4 week mark (16 weeks for max results) and I can already see subtle results!  I'm Asian so I have short/sparse/straight lashes.  Lumigan and Latisse are both .03% bimatoprost solution and the vehicle (solution they're in) is the same composition.  That said, they're obviously used differently.  Don't let anyone tell you differently, they're just trying to scare you.  I got Latisse because I don't want my insurance company to think I have glaucoma and raise my premium (haha).