What do females desire? According to a 2014 Allergan poll, 75% of women between the ages of 18 and 65 prefer eyelashes that are longer, thicker, and darker. Allergen's blockbuster lash growth serum Latisse, which demonstrates clinically significant increases to lash length, thickness, and blackness after 16 weeks of treatment, was brought to market as a result of this sort of overwhelming...