You've probably heard of Latisse, the eyelash growing serum that was discovered when glaucoma patients taking prostaglandin analogue eye drops had the desirable side effect of longer, thicker eyelashes.  But there's new research showing that not only can prostaglandins make your eyelashes fuller, they can also penetrate the skin and reduce under eye puffiness too.  XAF5 is a topical ocular ointment made by...