Curling Mascaras

I have done extensive modeling and have tried every method and brand of mascara that is made. My lashes have always been straight and none of the new curling mascaras, white volume coating, or heated curling wands do anything for me whatsoever. I am a cosmetic junkie and every time something new comes I have hope but nothing works. Even if my lashes are curled for a few minutes they straighten right back out. Would like to hear if anyone might have straight lashes such as myself and had these problems.