Your lashes sound woefully similar to my lashes and, speaking from firsthand experience, it’s not the curler (I use this one, for the record). The problem is likely that your lashes can’t support the weight of a super-thickening, dramatic mascara (Diorshow is a phenomenal product but not right for all lash types, in my opinion). My lashes work best with lengthening and defining formulas—mascaras that give you a long, fluttery Bambi-like lash, versus a thicker look. My favorites: Eyeko Fat, Covergirl Lash Blast Length, and—for girls in Europe—Max Factor Clump Defy. And my latest obsession is Benefit’s They’re Real, which might be a good compromise—they thicken lashes for a more dramatic look, as well as lengthen, without being terribly heavy and flattening.