Designer Brands Lash Extensions Mascara - Black Brown Lash Extensions is formulated with microfibres and dark pigment, allowing you to easily build on lashes, amping up both volume and length. It's a great lash-building alternative to a tubing mascara that delivers 100% dramatic and fuller lashes, fortified with nourishing Vitamin E. Directions 1. For best results, apply DB Lash Primer to clean lashes before mascara application. 2. Zig-zag mascara brush from base of lash line, working your way up to the ends of lashes. 3. Repeat steps for extra length and volume.