NYX Jumbo 2-in-1 Liner & Lash Adhesive Baddest Black is a universal two-in-one product: eyeliner and glue for false eyelashes. The deep black shade highlights the look and helps create clear arrows. The formula simultaneously works as a long-lasting liner and as a reliable adhesive for fixing eyelashes. The user-friendly format allows you to speed up the makeup process and make it as comfortable as possible.