Recently my presciption was refilled with the generic form, I love geberic stuff, no label needed for this gal but it doesn't have the same tingle as Latisse and I've noticed lash breakage and the lashes appear overall thinner. In addition to that, the bottle dropper part has black stuff that I could never remove no matter how hard I scraped and appears to be a manufacturing issue and not mold or other concerns. Could the inactivite ingredients cause the breakage?