Tightlining is one of the best ways to create longer, fuller-looking lashes within seconds. Yes, mascara is key for achieving luscious lash fringe, but tightlining, a method of applying eyeliner at the base of the lashes, does wonders for your beauty look. Have we piqued your interest? Good. Now learn how to tightline for voluminous lashes in today's Beauty How-To. On Kirbie: Topshop top.