Mascara has changed a lot in the last few years. There are formulas designed specifically for lengthening as opposed to multi-purpose products or those designed to do a great job of adding volume to lashes. Look for an applicator that will lift, separate and coat each individual lash, without clumping or creating fat, fake looking lashes. When you're evaluating any mascara product, be sure to check out the applicator. Close bristles usually mean a formula designed to add volume, while more widely spaced bristles are effective at separating and adding length to lashes.