Some separate, curl, lengthen, and add volume. Some promise the featheriness of false eyelashes, while others are tear-resistant and tint your lashes to unspecified blackness. Choosing a mascara is both fun and challenging because of the vast selection, no matter whether you're looking for one that gives you lashes that look natural, a low-cost alternative to a high-end brand, a formula that won't hurt your sensitive eyes, or all of the above.